MESON Chess Problem Database
Problem Display
PID: 144761 (8/3p2p1/3pp1B1/1N1Pnn1K/4kBP1/3r3N/2Q1P3/4R3 w - - 0 1)
Bakay, Bela
Magyar Sakkvilag, 1931
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Kxd5
- 2.e4#
- 1...Sf3
- 2.Qxd3#
- 1...Sc4
- 2.Qxd3#
- 1...Sxg4
- 2.Qxd3#
- 1...Sc6
- 2.Qxd3#
- 1...Sxg6
- 2.Qxd3#
- 1...Sf7
- 2.Qxd3#
- 1...exd5
- 2.Bxf5#
- 1...Kxd5
- Tries
- 1.Sf2+?
- 1...Kxd5
- 2.e4#
- 1...Kxf4!
- 1...Kxd5
- 1.Sg5+?
- 1...Kxd5
- 2.e4#
- 1...Kxf4!
- 1...Kxd5
- 1.Bxf5+?
- 1...Kxd5
- 2.e4#
- 1...exf5!
- 1...Kxd5
- 1.Ra1?
- 1...Sxg4
- 2.Qxd3#
- 1...Sxg6
- 2.Qxd3#
- 1...exd5
- 2.Bxf5#
- 1...Sf3
- 2.Qxd3#
- 1...Sc4
- 2.Qxd3#
- 1...Sc6
- 2.Qxd3#
- 1...Sf7
- 2.Qxd3#
- 1...Kxd5!
- 1...Sxg4
- 1.Rb1?
- 1...Sxg4
- 2.Qxd3#
- 1...Sxg6
- 2.Qxd3#
- 1...exd5
- 2.Bxf5#
- 1...Sf3
- 2.Qxd3#
- 1...Sc4
- 2.Qxd3#
- 1...Sc6
- 2.Qxd3#
- 1...Sf7
- 2.Qxd3#
- 1...Kxd5!
- 1...Sxg4
- 1.Rc1?
- 1...Sxg4
- 2.Qxd3#
- 1...Sxg6
- 2.Qxd3#
- 1...exd5
- 2.Bxf5#
- 1...Sf3
- 2.Qxd3#
- 1...Sc4
- 2.Qxd3#
- 1...Sc6
- 2.Qxd3#
- 1...Sf7
- 2.Qxd3#
- 1...Kxd5!
- 1...Sxg4
- 1.Rd1?
- 1...Sxg4
- 2.Qxd3#
- 1...Sxg6
- 2.Qxd3#
- 1...exd5
- 2.Bxf5#
- 1...Sf3
- 2.Qxd3#
- 1...Sc4
- 2.Qxd3#
- 1...Sc6
- 2.Qxd3#
- 1...Sf7
- 2.Qxd3#
- 1...Kxd5!
- 1...Sxg4
- 1.Rf1?
- 1...Sxg4
- 2.Qxd3#
- 1...Sxg6
- 2.Qxd3#
- 1...exd5
- 2.Sg5#
- 2.Bxf5#
- 1...Sf3
- 2.Qxd3#
- 1...Sc4
- 2.Qxd3#
- 1...Sc6
- 2.Qxd3#
- 1...Sf7
- 2.Qxd3#
- 1...Kxd5!
- 1...Sxg4
- 1.Rg1?
- 1...Sxg4
- 2.Qxd3#
- 1...Sxg6
- 2.Qxd3#
- 1...exd5
- 2.Bxf5#
- 1...Sf3
- 2.Qxd3#
- 1...Sc4
- 2.Qxd3#
- 1...Sc6
- 2.Qxd3#
- 1...Sf7
- 2.Qxd3#
- 1...Kxd5!
- 1...Sxg4
- 1.Rh1?
- 1...Sxg4
- 2.Qxd3#
- 1...Sxg6
- 2.Qxd3#
- 1...exd5
- 2.Bxf5#
- 1...Sf3
- 2.Qxd3#
- 1...Sc4
- 2.Qxd3#
- 1...Sc6
- 2.Qxd3#
- 1...Sf7
- 2.Qxd3#
- 1...Kxd5!
- 1...Sxg4
- 1.Qb1?
- 1...Sxg4
- 2.Qxd3#
- 1...Sxg6
- 2.Qxd3#
- 1...exd5
- 2.Bxf5#
- 1...Sf3
- 2.Qxd3#
- 1...Sc4
- 2.Qxd3#
- 1...Sc6
- 2.Qxd3#
- 1...Sf7
- 2.Qxd3#
- 1...Kxd5!
- 1...Sxg4
- 1.Qc4+?
- 1...Rd4
- 2.Sc3#
- 2.Sxd6#
- 2.Qxd4#
- 1...Sxc4!
- 1...Rd4
- 1.exd3+?
- 1...Kf3
- 2.Rf1#
- 2.Qe2#
- 2.Qf2#
- 1...Kxd5!
- 1...Kf3
- 1.g5?
- 1...Kxd5
- 2.e4#
- 1...Sxg6
- 2.Qxd3#
- 1...Sf3
- 2.Qxd3#
- 1...Sc4
- 2.Qxd3#
- 1...Sg4
- 2.Qxd3#
- 1...Sc6
- 2.Qxd3#
- 1...Sf7
- 2.Qxd3#
- 1...exd5!
- 1...Kxd5
- 1.Sf2+?
- Keys
- 1.e3!
- 1...Kf3
- 2.Sg5#
- 1...Kxd5
- 2.e4#
- 1...Sxg4
- 2.Qg2#
- 1...Sxg6
- 2.Qg2#
- 1...exd5
- 2.Sg5#
- 1...Sf3
- 2.Sc3#
- 1...Sc4
- 2.Qg2#
- 1...Sc6
- 2.Qg2#
- 1...Sf7
- 2.Qg2#
- 1...Kf3
- 1.e3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(b);N_SPINR(a),N_SPINS(d),OGATE,S_FLIGHT,XP(H)::P(C)
- S(c);N_GUARD::QAB1(B),XR(a)
- S(c);N_GUARD,XP(F)::QAB1(B),XR(a)
- S(c);N_GUARD,N_SPINS(d),XB(J)::QAB1(B),XR(a)
- P(f);N_GUARD,SBLOCK,XP(H)::B(J),XS(d)
- Tries
- Try
- S(D);CHECK
- Vars
- K(b);N_SPINR(a),N_SPINS(d),OGATE,S_FLIGHT,XP(H)::P(C)
- Refutation
- K(b);N_SPINR(a),N_SPINS(d),P-FLIGHT,XB(E)
- Try
- S(D);CHECK
- Vars
- K(b);N_SPINR(a),N_SPINS(d),OGATE,S_FLIGHT,XP(H)::P(C)
- Refutation
- K(b);N_SPINR(a),N_SPINS(d),P-FLIGHT,XB(E)
- Try
- B(J);CHECK,XS(d)
- Vars
- K(b);N_SPINR(a),OGATE,S_FLIGHT,XP(H)::P(C)
- Refutation
- P(f);XB(J)
- Try
- R(A);
- Vars
- S(c);N_GUARD,XP(F)::QAB1(B),XR(a)
- S(c);N_GUARD,N_SPINS(d),XB(J)::QAB1(B),XR(a)
- P(f);N_GUARD,SBLOCK,XP(H)::B(J),XS(d)
- S(c);N_GUARD::QAB1(B),XR(a)
- Refutation
- K(b);N_SPINR(a),N_SPINS(d),S_FLIGHT,XP(H)
- Try
- R(A);
- Vars
- S(c);N_GUARD,XP(F)::QAB1(B),XR(a)
- S(c);N_GUARD,N_SPINS(d),XB(J)::QAB1(B),XR(a)
- P(f);N_GUARD,SBLOCK,XP(H)::B(J),XS(d)
- S(c);N_GUARD::QAB1(B),XR(a)
- Refutation
- K(b);N_SPINR(a),N_SPINS(d),S_FLIGHT,XP(H)
- Try
- R(A);
- Vars
- S(c);N_GUARD,XP(F)::QAB1(B),XR(a)
- S(c);N_GUARD,N_SPINS(d),XB(J)::QAB1(B),XR(a)
- P(f);N_GUARD,SBLOCK,XP(H)::B(J),XS(d)
- S(c);N_GUARD::QAB1(B),XR(a)
- Refutation
- K(b);N_SPINR(a),N_SPINS(d),S_FLIGHT,XP(H)
- Try
- R(A);
- Vars
- S(c);N_GUARD,XP(F)::QAB1(B),XR(a)
- S(c);N_GUARD,N_SPINS(d),XB(J)::QAB1(B),XR(a)
- P(f);N_GUARD,SBLOCK,XP(H)::B(J),XS(d)
- S(c);N_GUARD::QAB1(B),XR(a)
- Refutation
- K(b);N_SPINS(d),S_FLIGHT,XP(H)
- Try
- R(A);
- Vars
- S(c);N_GUARD,XP(F)::QAB1(B),XR(a)
- S(c);N_GUARD,N_SPINS(d),XB(J)::QAB1(B),XR(a)
- S(c);N_GUARD::QAB1(B),XR(a)
- Refutation
- K(b);N_SPINR(a),N_SPINS(d),S_FLIGHT,XP(H)
- Try
- R(A);
- Vars
- S(c);N_GUARD,XP(F)::QAB1(B),XR(a)
- S(c);N_GUARD,N_SPINS(d),XB(J)::QAB1(B),XR(a)
- P(f);N_GUARD,SBLOCK,XP(H)::B(J),XS(d)
- S(c);N_GUARD::QAB1(B),XR(a)
- Refutation
- K(b);N_SPINR(a),N_SPINS(d),S_FLIGHT,XP(H)
- Try
- R(A);
- Vars
- S(c);N_GUARD,XP(F)::QAB1(B),XR(a)
- S(c);N_GUARD,N_SPINS(d),XB(J)::QAB1(B),XR(a)
- P(f);N_GUARD,SBLOCK,XP(H)::B(J),XS(d)
- S(c);N_GUARD::QAB1(B),XR(a)
- Refutation
- K(b);N_SPINR(a),N_SPINS(d),S_FLIGHT,XP(H)
- Try
- Q(B);
- Vars
- S(c);N_GUARD,XP(F)::QAB1(B),XR(a)
- S(c);N_GUARD,N_SPINS(d),XB(J)::QAB1(B),XR(a)
- P(f);N_GUARD,SBLOCK,XP(H)::B(J),XS(d)
- S(c);N_GUARD::QAB1(B),XR(a)
- Refutation
- K(b);N_SPINR(a),N_SPINS(d),S_FLIGHT,XP(H)
- Try
- Q(B);CHECK,N_PINR(a)
- Refutation
- S(c);XQ(B)
- Try
- P(C);CHECK,XR(a)
- Refutation
- K(b);N_SPINS(d),S_FLIGHT,XP(H)
- Try
- P(F);
- Vars
- K(b);N_SPINR(a),N_SPINS(d),OGATE,S_FLIGHT,XP(H)::P(C)
- S(c);N_GUARD,N_SPINS(d),XB(J)::QAB1(B),XR(a)
- S(c);N_GUARD::QAB1(B),XR(a)
- Refutation
- P(f);XP(H)
- Try
- Actual
- P(C);
- Vars
- K(b);N_SPINR(a),N_SPINS(d),S_FLIGHT::S(D)
- K(b);N_SPINR(a),N_SPINS(d),OGATE,S_FLIGHT,XP(H)::P(C)
- S(c);N_GUARD,XP(F)::QAB(B)
- S(c);N_GUARD,N_SPINS(d),XB(J)::QAB(B)
- P(f);SBLOCK,XP(H)::S(D)
- S(c);SBLOCK::S(G)
- S(c);N_GUARD::QAB(B)
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).