MESON Chess Problem Database
Problem Display
PID: 195032 (5r2/1p3p1B/3N1R2/p3k1P1/pNP5/2Kp2r1/3P3Q/B3n2n w - - 0 1)
White, Alain Campbell
St. Louis Globe Democrat, 1918
#2
10 + 10
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Ra8
- 2.Sxf7#
- 1...Rb8
- 2.Sxf7#
- 1...Rc8
- 2.Sxf7#
- 1...Rd8
- 2.Sxf7#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sc2
- 2.Sxd3#
- 1...Sg2
- 2.Sxd3#
- 1...Sf3
- 2.Sxd3#
- 1...Sf2
- 2.Qxg3#
- 1...a3
- 2.Kb3#
- 1...axb4+
- 2.Kxb4#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...Ra8
- Tries
- 1.Sxb7?
- threat
- 2.Sc6#
- 1...axb4+
- 2.Kxb4#
- 1...Rc8!
- threat
- 1.Bb2?
- 1...axb4+
- 2.Kxb4#
- 1...Sc2
- 2.Sxd3#
- 1...Ra8
- 2.Sxf7#
- 1...Rb8
- 2.Sxf7#
- 1...Rc8
- 2.Sxf7#
- 1...Rd8
- 2.Sxf7#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sg2
- 2.Sxd3#
- 1...Sf3
- 2.Sxd3#
- 1...Sf2
- 2.Qxg3#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...a3!
- 1...axb4+
- 1.Bg6?
- 1...axb4+
- 2.Kxb4#
- 1...Sc2
- 2.Sxd3#
- 1...Ra8
- 2.Sxf7#
- 1...Rb8
- 2.Sxf7#
- 1...Rc8
- 2.Sxf7#
- 1...Rd8
- 2.Sxf7#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sg2
- 2.Sxd3#
- 1...Sf3
- 2.Sxd3#
- 1...Sf2
- 2.Qxg3#
- 1...a3
- 2.Kb3#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...fxg6!
- 1...axb4+
- 1.Qg1?
- threat
- 2.Qd4#
- 2.Qc5#
- 1...axb4+
- 2.Kxb4#
- 1...Rxg5
- 2.Qd4#
- 2.Qxg5#
- 1...Sc2
- 2.Qc5#
- 1...Re3
- 2.Qxe3#
- 1...Rg4
- 2.Qc5#
- 1...Rc8
- 2.Sxf7#
- 2.Qd4#
- 1...Sf3
- 2.Sxd3#
- 2.Qe3#
- 2.Qc5#
- 1...Sf2
- 2.Qxg3#
- 1...b6
- 2.Sc6#
- 2.Qd4#
- 1...Rxg1!
- threat
- 1.Qe2+?
- 1...Re3
- 2.Qxe3#
- 1...dxe2+!
- 1...Re3
- 1.Qf2?
- threat
- 2.Qd4#
- 2.Qc5#
- 2.Qf4#
- 2.Qf5#
- 1...axb4+
- 2.Kxb4#
- 1...Rxg5
- 2.Qd4#
- 2.Qf4#
- 1...Sc2
- 2.Qc5#
- 2.Qf4#
- 2.Qf5#
- 1...Re3
- 2.Qxe3#
- 2.Qf4#
- 2.Qf5#
- 1...Rf3
- 2.Qd4#
- 2.Qc5#
- 1...Rg4
- 2.Qc5#
- 2.Qf5#
- 1...Rc8
- 2.Sxf7#
- 2.Qd4#
- 2.Qf4#
- 2.Qf5#
- 1...Sg2
- 2.Qd4#
- 2.Qc5#
- 2.Qf5#
- 1...Sf3
- 2.Sxd3#
- 2.Qe3#
- 2.Qc5#
- 1...b6
- 2.Sc6#
- 2.Qd4#
- 2.Qf4#
- 2.Qf5#
- 1...Sxf2!
- threat
- 1.Qh4?
- threat
- 2.Qd4#
- 2.Qe4#
- 2.Qf4#
- 1...axb4+
- 2.Kxb4#
- 1...Rxg5
- 2.Qxg5#
- 2.Qd4#
- 2.Qf4#
- 1...Sc2
- 2.Qe4#
- 2.Qf4#
- 1...Re3
- 2.Qd4#
- 2.Qf4#
- 1...Rf3
- 2.Qd4#
- 2.Qe4#
- 1...Sg2
- 2.Qd4#
- 2.Qe4#
- 1...Sf3
- 2.Sxd3#
- 2.Qe4#
- 2.Qf4#
- 1...Sf2
- 2.Qxg3#
- 2.Qd4#
- 2.Qf4#
- 1...Rg4!
- threat
- 1.Qh6?
- threat
- 2.Rf5#
- 1...axb4+
- 2.Kxb4#
- 1...Rxg5
- 2.Qxg5#
- 1...Rf3!
- threat
- 1.c5?
- threat
- 2.Kc4#
- 2.Sc4#
- 1...axb4+
- 2.Kc4#
- 1...Sc2
- 2.Sc4#
- 1...Sf3
- 2.Sc4#
- 1...b5!
- threat
- 1.Sxb7?
- Keys
- 1.Bxd3!
- 1...axb4+
- 2.Kxb4#
- 1...Sxd3
- 2.Sxd3#
- 1...Sc2
- 2.Kxc2#
- 1...Ra8
- 2.Sxf7#
- 1...Rb8
- 2.Sxf7#
- 1...Rc8
- 2.Sxf7#
- 1...Rd8
- 2.Sxf7#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sg2
- 2.Kc2#
- 1...Sf3
- 2.Qe2#
- 1...Sf2
- 2.Qxg3#
- 1...a3
- 2.Kb3#
- 1...b5
- 2.Sc6#
- 1...b6
- 2.Sc6#
- 1...axb4+
- 1.Bxd3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(j);N_GUARD::S(H),XP(i)
- R(j);N_GUARD,P_PINP(F)::S(H),XP(i)
- S(a);N_GUARD::S(E),XP(c)
- S(b);N_GUARD::QAB(C),XR(d)
- P(e);::B(A)+K(D)
- P(f);CHECK,XS(E)::B(A)+K(D),XP(f)
- P(h);N_GUARD::S(E)
- Tries
- Try
- S(H);XP(h)
- Threat
- S(E)
- Vars
- P(f);CHECK,XS(E)::B(A)+K(D),XP(f)
- Refutation
- R(j);P_PINP(F)
- Try
- B(A);
- Vars
- P(f);CHECK,XS(E)::B(A)+K(D),XP(f)
- S(a);N_GUARD::S(E),XP(c)
- R(j);N_GUARD::S(H),XP(i)
- R(j);N_GUARD,P_PINP(F)::S(H),XP(i)
- S(b);N_GUARD::QAB(C),XR(d)
- P(h);N_GUARD::S(E)
- Refutation
- P(e);
- Try
- B(J);
- Vars
- P(f);CHECK,XS(E)::B(A)+K(D),XP(f)
- S(a);N_GUARD::S(E),XP(c)
- R(j);N_GUARD::S(H),XP(i)
- R(j);N_GUARD,P_PINP(F)::S(H),XP(i)
- S(b);N_GUARD::QAB(C),XR(d)
- P(e);::B(A)+K(D)
- P(h);N_GUARD::S(E)
- Refutation
- P(i);XB(J)
- Try
- Q(C);N_PINR(d)
- Threat
- DUALS(2)
- Vars
- P(f);CHECK,XS(E)::B(A)+K(D),XP(f)
- S(a);::QAR2(C)
- R(d);N_GUARD::QAR2(C),XR(d)
- R(d);::QAR2(C)
- S(b);N_GUARD::QAB(C),XR(d)
- Refutation
- R(d);XQ(C)
- Try
- Q(C);CHECK,N_PINR(d)
- Vars
- R(d);N_GUARD,P_SPINR(d)::QAR2(C),XR(d)
- Refutation
- P(c);CHECK,XQ(C)
- Try
- Q(C);N_PINR(d)
- Threat
- DUALS(4)
- Vars
- P(f);CHECK,XS(E)::B(A)+K(D),XP(f)
- Refutation
- S(b);XQ(C)
- Try
- Q(C);N_PINR(d)
- Threat
- DUALS(3)
- Vars
- P(f);CHECK,XS(E)::B(A)+K(D),XP(f)
- Refutation
- R(d);
- Try
- Q(C);N_PINR(d)
- Threat
- R1(I)
- Vars
- P(f);CHECK,XS(E)::B(A)+K(D),XP(f)
- R(d);OGATE,XP(G)::QAR2(C),XR(d)
- Refutation
- R(d);
- Try
- P(F);
- Threat
- DUALS(2)
- Vars
- P(f);CHECK,XS(E)::B(A)+K(D)
- S(a);::S(H)
- Refutation
- P(h);
- Try
- Actual
- B(J);P_SPINB(J),XP(c)
- Vars
- P(f);CHECK,XS(E)::B(A)+K(D),XP(f)
- S(a);XB(J)::S(E),XS(a)
- S(a);::B(A)+K(D),XS(a)
- R(j);N_GUARD::S(H),XP(i)
- R(j);N_GUARD,P_PINP(F)::S(H),XP(i)
- S(a);::B(A)+K(D)
- S(a);N_PINB(J)::QAR(C)
- S(b);N_GUARD::QAB(C),XR(d)
- P(e);::B(A)+K(D)
- P(h);N_GUARD::S(E)
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).