MESON Chess Problem Database
Problem Display
PID: 55063 (3R1N2/5p1N/1K4pR/4kn2/1nQ3P1/8/8/8 w - - 0 1)
Lewis, Robert Tony
2nd Prize, Problem Observer, 2004
#2
7 + 5
| 136 | Problem Observer | 2005 |
SOLUTION
- SOUND
- Sets
- 1...Sa2
- 2.Rd5#
- 1...Sc2
- 2.Rd5#
- 1...Sd3
- 2.Rd5#
- 1...Sd5+
- 2.Rxd5#
- 1...Sa6
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 1...Se3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sh4
- 2.Qd4#
- 1...Sd6
- 2.Sd7#
- 1...Sxh6
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...g5
- 2.Sd7#
- 1...f6
- 2.Sxg6#
- 1...Sa2
- Tries
- 1.Ka5?
- 1...Sxh6
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sa2
- 2.Rd5#
- 1...Sc2
- 2.Rd5#
- 1...Sd3
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- 1...Sa6
- 2.Rd5#
- 1...Se3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sh4
- 2.Qd4#
- 1...Sd6
- 2.Sd7#
- 1...Se7
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...g5
- 2.Sd7#
- 1...f6
- 2.Sxg6#
- 1...Sc6+!
- 1...Sxh6
- 1.Kb5?
- 1...Sd4+
- 2.Qxd4#
- 1...Sxh6
- 2.Qd4#
- 1...Sa2
- 2.Rd5#
- 1...Sc2
- 2.Rd5#
- 1...Sd3
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- 1...Sa6
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 1...Se3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sh4
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...g5
- 2.Sd7#
- 1...f6
- 2.Sxg6#
- 1...Sd6+!
- 1...Sd4+
- 1.Ka7?
- 1...Sxh6
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sa2
- 2.Rd5#
- 1...Sc2
- 2.Rd5#
- 1...Sd3
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- 1...Sa6
- 2.Rd5#
- 1...Se3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sh4
- 2.Qd4#
- 1...Sd6
- 2.Sd7#
- 1...Se7
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...g5
- 2.Sd7#
- 1...f6
- 2.Sxg6#
- 1...Sc6+!
- 1...Sxh6
- 1.Kb7?
- 1...Sxh6
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sa2
- 2.Rd5#
- 1...Sc2
- 2.Rd5#
- 1...Sd3
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- 1...Sa6
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 1...Se3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sh4
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...g5
- 2.Sd7#
- 1...f6
- 2.Sxg6#
- 1...Sd6+!
- 1...Sxh6
- 1.Kc7?
- threat
- 2.Sd7#
- 1...Sd5+
- 2.Rxd5#
- 1...Sd4
- 2.Qxd4#
- 1...Sa6+!
- threat
- 1.Rh1?
- 1...Sd5+
- 2.Rxd5#
- 1...Sd4
- 2.Qxd4#
- 1...Sa2
- 2.Rd5#
- 1...Sc2
- 2.Rd5#
- 1...Sd3
- 2.Rd5#
- 1...Sa6
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 1...Se3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sh4
- 2.Re1#
- 2.Qd4#
- 1...Sd6
- 2.Sd7#
- 1...Sh6
- 2.Re1#
- 2.Qd4#
- 1...Se7
- 2.Re1#
- 2.Qd4#
- 1...Sg7
- 2.Re1#
- 2.Qd4#
- 1...f6
- 2.Sxg6#
- 1...g5!
- 1...Sd5+
- 1.Rh2?
- 1...Sd5+
- 2.Rxd5#
- 1...Sd4
- 2.Qxd4#
- 1...Sa2
- 2.Rd5#
- 1...Sc2
- 2.Rd5#
- 1...Sd3
- 2.Rd5#
- 1...Sa6
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 1...Se3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sh4
- 2.Re2#
- 2.Qd4#
- 1...Sd6
- 2.Sd7#
- 1...Sh6
- 2.Re2#
- 2.Qd4#
- 1...Se7
- 2.Re2#
- 2.Qd4#
- 1...Sg7
- 2.Re2#
- 2.Qd4#
- 1...f6
- 2.Sxg6#
- 1...g5!
- 1...Sd5+
- 1.Rh3?
- 1...Sd5+
- 2.Rxd5#
- 1...Sd4
- 2.Qxd4#
- 1...Sa2
- 2.Rd5#
- 1...Sc2
- 2.Rd5#
- 1...Sd3
- 2.Rd5#
- 1...Sa6
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 1...Se3
- 2.Rxe3#
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sh4
- 2.Re3#
- 2.Qd4#
- 1...Sd6
- 2.Sd7#
- 1...Sh6
- 2.Re3#
- 2.Qd4#
- 1...Se7
- 2.Re3#
- 2.Qd4#
- 1...Sg7
- 2.Re3#
- 2.Qd4#
- 1...f6
- 2.Sxg6#
- 1...g5!
- 1...Sd5+
- 1.Rh4?
- 1...Sd5+
- 2.Rxd5#
- 1...Sxh4
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sa2
- 2.Rd5#
- 1...Sc2
- 2.Rd5#
- 1...Sd3
- 2.Rd5#
- 1...Sa6
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 1...Se3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd6
- 2.Sd7#
- 1...Sh6
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...f6
- 2.Sxg6#
- 1...g5!
- 1...Sd5+
- 1.Rxg6?
- threat
- 2.Sd7#
- 1...Sd5+
- 2.Rxd5#
- 1...fxg6
- 2.Sxg6#
- 1...Sd4
- 2.Qxd4#
- 1...f6!
- threat
- 1.Rd1?
- threat
- 2.Sd7#
- 1...Sd5+
- 2.Rxd5#
- 1...Sd4
- 2.Qxd4#
- 1...Sd3!
- threat
- 1.Rd2?
- threat
- 2.Sd7#
- 1...Sd5+
- 2.Rxd5#
- 1...Sd4
- 2.Qxd4#
- 1...Sd3!
- threat
- 1.Rd3?
- threat
- 2.Sd7#
- 1...Sd5+
- 2.Rxd5#
- 1...Sd4
- 2.Qxd4#
- 1...Sxd3!
- threat
- 1.Rd4?
- threat
- 2.Sd7#
- 1...Sd5+
- 2.Rxd5#
- 2.Qxd5#
- 1...Sxd4!
- threat
- 1.Rd7?
- 1...Sd5+
- 2.Rxd5#
- 1...Sxh6
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sa2
- 2.Rd5#
- 1...Sc2
- 2.Rd5#
- 1...Sd3
- 2.Rd5#
- 1...Sa6
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 1...Se3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sh4
- 2.Qd4#
- 1...Sd6
- 2.Re7#
- 1...Se7
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...f6
- 2.Sxg6#
- 1...g5!
- 1...Sd5+
- 1.Re8+?
- 1...Kd6
- 2.Qc5#
- 1...Se7!
- 1...Kd6
- 1.Qe2+?
- 1...Se3
- 2.Qxe3#
- 1...Kf4!
- 1...Se3
- 1.Ka5?
- Keys
- 1.Rd6!
- 1...Sd5+
- 2.Rxd5#
- 1...Kxd6
- 2.Qc5#
- 1...Sxd6
- 2.Sd7#
- 1...Sxh6
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...g5
- 2.Sd7#
- 1...Sa2
- 2.Rd5#
- 1...Sc2
- 2.Rd5#
- 1...Sd3
- 2.Rd5#
- 1...Sa6
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 1...Se3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sh4
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...f6
- 2.Re6#
- 1...Sd5+
- 1.Rd6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::R1(F)
- S(a);CHECK,N_GUARD::R1(F),XS(a)
- S(c);N_GUARD::QAB1(A)
- S(c);N_GUARD::QAB1(A),XS(c)
- S(c);SBLOCK::S(G)
- S(c);N_GUARD,XR(D)::QAB1(A)
- P(d);::S(G)
- P(e);N_GUARD::S(G),XP(d)
- Tries
- Try
- K(C);S_FLIGHT
- Vars
- S(c);N_GUARD,XR(D)::QAB1(A)
- S(c);N_GUARD::QAB1(A),XS(c)
- S(a);N_GUARD::R1(F)
- S(a);N_GUARD::R1(F),XS(a)
- S(c);N_GUARD::QAB1(A)
- S(c);SBLOCK::S(G)
- P(d);::S(G)
- P(e);N_GUARD::S(G),XP(d)
- Refutation
- S(a);CHECK
- Try
- K(C);P-FLIGHT
- Vars
- S(c);CHECK,N_GUARD::QAB1(A),XS(c)
- S(c);N_GUARD,XR(D)::QAB1(A)
- S(a);N_GUARD::R1(F)
- S(a);N_GUARD::R1(F),XS(a)
- S(c);N_GUARD::QAB1(A)
- P(d);::S(G)
- P(e);N_GUARD::S(G),XP(d)
- Refutation
- S(c);CHECK
- Try
- K(C);S_FLIGHT
- Vars
- S(c);N_GUARD,XR(D)::QAB1(A)
- S(c);N_GUARD::QAB1(A),XS(c)
- S(a);N_GUARD::R1(F)
- S(a);N_GUARD::R1(F),XS(a)
- S(c);N_GUARD::QAB1(A)
- S(c);SBLOCK::S(G)
- P(d);::S(G)
- P(e);N_GUARD::S(G),XP(d)
- Refutation
- S(a);CHECK
- Try
- K(C);P-FLIGHT
- Vars
- S(c);N_GUARD,XR(D)::QAB1(A)
- S(c);N_GUARD::QAB1(A),XS(c)
- S(a);N_GUARD::R1(F)
- S(a);N_GUARD::R1(F),XS(a)
- S(c);N_GUARD::QAB1(A)
- P(d);::S(G)
- P(e);N_GUARD::S(G),XP(d)
- Refutation
- S(c);CHECK
- Try
- K(C);S_FLIGHT
- Threat
- S(G)
- Vars
- S(a);CHECK,N_GUARD::R1(F),XS(a)
- S(c);N_GUARD::QAB1(A),XS(c)
- Refutation
- S(a);CHECK
- Try
- R(D);
- Vars
- S(a);CHECK,N_GUARD::R1(F),XS(a)
- S(c);N_GUARD::QAB1(A),XS(c)
- S(a);N_GUARD::R1(F)
- S(c);N_GUARD::QAB1(A)
- S(c);SBLOCK::S(G)
- P(e);N_GUARD::S(G),XP(d)
- Refutation
- P(d);
- Try
- R(D);
- Vars
- S(a);CHECK,N_GUARD::R1(F),XS(a)
- S(c);N_GUARD::QAB1(A),XS(c)
- S(a);N_GUARD::R1(F)
- S(c);N_GUARD::QAB1(A)
- S(c);SBLOCK::S(G)
- P(e);N_GUARD::S(G),XP(d)
- Refutation
- P(d);
- Try
- R(D);
- Vars
- S(a);CHECK,N_GUARD::R1(F),XS(a)
- S(c);N_GUARD::QAB1(A),XS(c)
- S(a);N_GUARD::R1(F)
- S(c);N_GUARD::QAB1(A)
- S(c);SBLOCK::S(G)
- P(e);N_GUARD::S(G),XP(d)
- Refutation
- P(d);
- Try
- R(D);
- Vars
- S(a);CHECK,N_GUARD::R1(F),XS(a)
- S(c);N_GUARD,XR(D)::QAB1(A)
- S(c);N_GUARD::QAB1(A),XS(c)
- S(a);N_GUARD::R1(F)
- S(c);N_GUARD::QAB1(A)
- S(c);SBLOCK::S(G)
- P(e);N_GUARD::S(G),XP(d)
- Refutation
- P(d);
- Try
- R(D);XP(d)
- Threat
- S(G)
- Vars
- S(a);CHECK,N_GUARD::R1(F),XS(a)
- P(e);XR(D)::S(G),XP(e)
- S(c);N_GUARD::QAB1(A),XS(c)
- Refutation
- P(e);
- Try
- R(F);
- Threat
- S(G)
- Vars
- S(a);CHECK,N_GUARD::R1(F),XS(a)
- S(c);N_GUARD::QAB1(A),XS(c)
- Refutation
- S(a);
- Try
- R(F);
- Threat
- S(G)
- Vars
- S(a);CHECK,N_GUARD::R1(F),XS(a)
- S(c);N_GUARD::QAB1(A),XS(c)
- Refutation
- S(a);
- Try
- R(F);
- Threat
- S(G)
- Vars
- S(a);CHECK,N_GUARD::R1(F),XS(a)
- S(c);N_GUARD::QAB1(A),XS(c)
- Refutation
- S(a);XR(F)
- Try
- R(F);
- Threat
- S(G)
- Refutation
- S(c);XR(F)
- Try
- R(F);
- Vars
- S(a);CHECK,N_GUARD::R1(F),XS(a)
- S(c);N_GUARD,XR(D)::QAB1(A)
- S(c);N_GUARD::QAB1(A),XS(c)
- S(a);N_GUARD::R1(F)
- S(c);N_GUARD::QAB1(A)
- S(c);N_GUARD,SBLOCK::R(F)
- P(e);N_GUARD::S(G),XP(d)
- Refutation
- P(d);
- Try
- R(F);CHECK
- Vars
- K(b);P_SPINP(d),S_FLIGHT::QAB1(A)
- Refutation
- S(c);P_SPINS(c)
- Try
- Q(A);CHECK
- Vars
- S(c);N_GUARD,P_SPINS(c)::QAR2(A),XS(c)
- Refutation
- K(b);S_FLIGHT
- Try
- Actual
- R(F);
- Vars
- S(a);CHECK,N_GUARD::R1(F),XS(a)
- K(b);P_SPINP(d),S_FLIGHT,XR(F)::QAB1(A)
- S(c);SBLOCK,XR(F)::S(G)
- S(c);N_GUARD,XR(D)::QAB1(A)
- S(c);N_GUARD::QAB1(A),XS(c)
- P(d);::S(G)
- S(a);N_GUARD::R1(F)
- S(c);N_GUARD::QAB1(A)
- P(e);N_GUARD::R1(F)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).