MESON Chess Problem Database
Problem Display
PID: 48420 (3NQ3/6p1/5pP1/2n1nk1K/8/3pR1P1/8/1B6 w - - 0 1)
Lewis, Robert Tony
Mat Plus, 1994
#2
7 + 6
SOLUTION
- SOUND
- Sets
- 1...Sb3
- 2.Qe6#
- 1...Sa4
- 2.Qe6#
- 1...Se4
- 2.Qe6#
- 1...Sa6
- 2.Qe6#
- 1...Se6
- 2.Qxe6#
- 1...Sb7
- 2.Qe6#
- 1...Scd7
- 2.Qe6#
- 1...Sf3
- 2.Rxf3#
- 1...Sc4
- 2.Rf3#
- 1...Sg4
- 2.Rf3#
- 1...Sc6
- 2.Rf3#
- 1...Sxg6
- 2.Qxg6#
- 1...Sed7
- 2.Rf3#
- 1...Sf7
- 2.Rf3#
- 1...Sb3
- Tries
- 1.Sc6?
- threat
- 2.Sd4#
- 1...Sxc6
- 2.Rf3#
- 1...Se6
- 2.Se7#
- 1...Sf3
- 2.Se7#
- 2.Rxf3#
- 1...Sb3!
- threat
- 1.Se6?
- threat
- 2.Sd4#
- 2.Sxg7#
- 1...Sb3
- 2.Sxg7#
- 1...Sf3
- 2.Sxg7#
- 2.g4#
- 1...Sc6
- 2.Sxg7#
- 2.g4#
- 1...Sxe6!
- threat
- 1.Ba2?
- 1...Sxg6
- 2.Qxg6#
- 1...Se4
- 2.Be6#
- 2.Qe6#
- 1...Sb3
- 2.Qe6#
- 1...Sa4
- 2.Be6#
- 2.Qe6#
- 1...Sa6
- 2.Be6#
- 2.Qe6#
- 1...Se6
- 2.Bxe6#
- 2.Qxe6#
- 1...Sb7
- 2.Be6#
- 2.Qe6#
- 1...Scd7
- 2.Be6#
- 2.Qe6#
- 1...Sf3
- 2.Rxf3#
- 1...Sc4
- 2.Rf3#
- 1...Sg4
- 2.Rf3#
- 1...Sc6
- 2.Rf3#
- 1...Sed7
- 2.Rf3#
- 1...Sf7
- 2.Rf3#
- 1...d2!
- 1...Sxg6
- 1.Bc2?
- 1...Sxg6
- 2.Qxg6#
- 1...Se4
- 2.Qe6#
- 1...Sb3
- 2.Qe6#
- 1...Sa4
- 2.Qe6#
- 1...Sa6
- 2.Qe6#
- 1...Se6
- 2.Qxe6#
- 1...Sb7
- 2.Qe6#
- 1...Scd7
- 2.Qe6#
- 1...Sf3
- 2.Rxf3#
- 1...Sc4
- 2.Rf3#
- 1...Sg4
- 2.Rf3#
- 1...Sc6
- 2.Rf3#
- 1...Sed7
- 2.Rf3#
- 1...Sf7
- 2.Rf3#
- 1...dxc2!
- 1...Sxg6
- 1.Bxd3+?
- 1...Scxd3
- 2.Qe6#
- 1...Se4
- 2.Bxe4#
- 2.Qe6#
- 1...Sexd3!
- 1...Scxd3
- 1.Qe7?
- 1...Sf3
- 2.Rxf3#
- 1...Sb3
- 2.Qe6#
- 1...Sa4
- 2.Qe6#
- 1...Se4
- 2.Qe6#
- 1...Sa6
- 2.Qe6#
- 1...Se6
- 2.Qxe6#
- 1...Sb7
- 2.Qe6#
- 1...Scd7
- 2.Qe6#
- 1...Sc4
- 2.Rf3#
- 1...Sg4
- 2.Rf3#
- 1...Sc6
- 2.Rf3#
- 1...Sed7
- 2.Rf3#
- 1...Sf7
- 2.Rf3#
- 1...Sxg6!
- 1...Sf3
- 1.g4+?
- 1...Sxg4
- 2.Rf3#
- 1...Kf4!
- 1...Sxg4
- 1.Sc6?
- Keys
- 1.Qb5!
- 1...Sxg6
- 2.Bxd3#
- 1...Se4
- 2.Rf3#
- 1...Sb3
- 2.Bxd3#
- 1...Sa4
- 2.Bxd3#
- 1...Sa6
- 2.Bxd3#
- 1...Se6
- 2.Bxd3#
- 1...Sb7
- 2.Bxd3#
- 1...Scd7
- 2.Bxd3#
- 1...Sf3
- 2.Bxd3#
- 1...Sc4
- 2.Bxd3#
- 1...Sg4
- 2.Bxd3#
- 1...Sc6
- 2.Bxd3#
- 1...Sed7
- 2.Bxd3#
- 1...Sf7
- 2.Bxd3#
- 1...Sxg6
- 1.Qb5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 14
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(b);N_GUARD::QAB1(G)
- S(b);N_GUARD,N_SPINP(a)::QAB1(G)
- S(b);N_GUARD::QAB1(G),XS(b)
- S(c);N_GUARD::R(B),XS(c)
- S(c);N_GUARD::R(B)
- S(c);OGATE,XP(E)::QAB1(G),XS(c)
- Tries
- Try
- S(F);
- Threat
- S(F)
- Vars
- S(c);N_GUARD,XS(F)::R(B)
- S(b);SBLOCK::S(F)
- Refutation
- S(b);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(b);::S(F),XP(f)
- Refutation
- S(b);XS(F)
- Try
- B(A);N_PINP(a)
- Vars
- S(c);OGATE,XP(E)::QAB1(G),XS(c)
- S(b);N_GUARD::QAB1(G)
- S(c);N_GUARD::R(B),XS(c)
- S(c);N_GUARD::R(B)
- Refutation
- P(a);
- Try
- B(A);
- Vars
- S(c);OGATE,XP(E)::QAB1(G),XS(c)
- S(b);N_GUARD,N_SPINP(a)::QAB1(G)
- S(b);N_GUARD::QAB1(G)
- S(b);N_GUARD::QAB1(G),XS(b)
- S(c);N_GUARD::R(B),XS(c)
- S(c);N_GUARD::R(B)
- Refutation
- P(a);N_SPINP(a),XB(A)
- Try
- B(A);CHECK,XP(a)
- Vars
- S(b);XB(A)::QAB1(G)
- Refutation
- S(c);XB(A)
- Try
- Q(G);
- Vars
- S(c);N_GUARD::R(B),XS(c)
- S(b);N_GUARD::QAB1(G)
- S(b);N_GUARD,N_SPINP(a)::QAB1(G)
- S(b);N_GUARD::QAB1(G),XS(b)
- S(c);N_GUARD::R(B)
- Refutation
- S(c);XP(E)
- Try
- P(C);CHECK
- Vars
- S(c);XP(C)::R(B)
- Refutation
- K(d);N_SPINP(a),P-FLIGHT
- Try
- Actual
- Q(G);
- Vars
- S(c);N_GUARD,P_SPINS(b),XP(E)::B(A),XP(a)
- S(b);N_SPINP(a),P_SPINS(c),SBLOCK::R(B)
- S(b);N_GUARD,P_SPINS(c)::B(A),XP(a)
- S(c);N_GUARD,P_SPINS(b)::B(A),XP(a)
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).