MESON Chess Problem Database
Problem Display
PID: 11742 (8/2p1Bp2/2PpPP2/1Ppkp2R/PP1nN3/4KN2/1Q4B1/3R4 w - - 0 1)
Maruta, Hidajat (Tjoa Giok Hing)
1st Prize, Probleemblad, 1971
#2
14 + 7
SOLUTION
- SOUND
- Sets
- 1...cxb4
- 2.Qb3#
- 1...cxb4
- Tries
- 1.Se1?
- 1...Kc4
- 2.Sd2#
- 1...cxb4
- 2.Qb3#
- 1...fxe6
- 2.Sxd6#
- 1...c4
- 2.Sc5#
- 1...Kxe6!
- 1...Kc4
- 1.Sg1?
- 1...Kc4
- 2.Sd2#
- 1...cxb4
- 2.Qb3#
- 1...fxe6
- 2.Sxd6#
- 1...c4
- 2.Sc5#
- 1...Kxe6!
- 1...Kc4
- 1.Sh2?
- 1...Kc4
- 2.Sd2#
- 1...cxb4
- 2.Qb3#
- 1...fxe6
- 2.Sxd6#
- 1...c4
- 2.Sc5#
- 1...Kxe6!
- 1...Kc4
- 1.Sxd4?
- threat
- 2.Sd2#
- 2.Sxd6#
- 1...Kc4
- 2.Sd2#
- 2.Qb3#
- 1...cxb4
- 2.Qb3#
- 1...cxd4+!
- threat
- 1.Sfg5?
- 1...Kc4
- 2.Sd2#
- 1...cxb4
- 2.Qb3#
- 1...c4
- 2.Sc3#
- 1...fxe6!
- 1...Kc4
- 1.Sc3+?
- 1...Kc4
- 2.Sd2#
- 1...Kxe6!
- 1...Kc4
- 1.Sg3?
- 1...Kc4
- 2.Sd2#
- 1...Kxe6
- 2.Sg5#
- 1...fxe6
- 2.Sxe5#
- 1...c4
- 2.Sxd4#
- 1...cxb4!
- 1...Kc4
- 1.Sxc5?
- threat
- 2.Sxe5#
- 2.Rxd4#
- 2.Qxd4#
- 2.Qa2#
- 2.Qb3#
- 1...Kc4
- 2.Sd2#
- 1...dxc5!
- threat
- 1.Sxd6?
- threat
- 2.Sxd4#
- 2.Rxe5#
- 1...Kxe6
- 2.Sg5#
- 2.Rxe5#
- 1...cxb4
- 2.Rxe5#
- 1...cxd6!
- threat
- 1.Rxd4+?
- 1...Kxe6
- 2.Bh3#
- 1...cxd4+!
- 1...Kxe6
- 1.Rxe5+?
- 1...Kc4
- 2.Sfd2#
- 2.Sed2#
- 2.Qc3#
- 1...dxe5!
- 1...Kc4
- 1.Qxd4+?
- 1...Kxe6
- 2.Bh3#
- 2.Qd5#
- 1...cxd4+!
- 1...Kxe6
- 1.Se1?
- Keys
- 1.Sh4!
- 1...Kc4
- 2.Sd2#
- 1...Kxe6
- 2.Sg5#
- 1...cxb4
- 2.Qb3#
- 1...fxe6
- 2.Sxd6#
- 1...c4
- 2.Sc5#
- 1...Kc4
- 1.Sh4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- P(b);N_GUARD,XP(G)::QAB(B)
- Tries
- Try
- S(E);
- Vars
- K(c);N_SPINP(d),N_SPINS(a),S_FLIGHT::S(H)
- P(b);N_GUARD,XP(G)::QAB(B)
- P(g);SBLOCK,XP(L)::B(C)+S(H),XP(e)
- P(b);SBLOCK::B(C)+S(H)
- Refutation
- K(c);N_SPINP(d),N_SPINS(a),S_FLIGHT,XP(L)
- Try
- S(E);
- Vars
- K(c);N_SPINP(d),N_SPINS(a),S_FLIGHT::S(H)
- P(b);N_GUARD,XP(G)::QAB(B)
- P(g);SBLOCK,XP(L)::B(C)+S(H),XP(e)
- P(b);SBLOCK::B(C)+S(H)
- Refutation
- K(c);N_SPINP(d),N_SPINS(a),S_FLIGHT,XP(L)
- Try
- S(E);
- Vars
- K(c);N_SPINP(d),N_SPINS(a),S_FLIGHT::S(H)
- P(b);N_GUARD,XP(G)::QAB(B)
- P(g);SBLOCK,XP(L)::B(C)+S(H),XP(e)
- P(b);SBLOCK::B(C)+S(H)
- Refutation
- K(c);N_SPINP(d),N_SPINS(a),S_FLIGHT,XP(L)
- Try
- S(E);XS(a)
- Threat
- DUALS(2)
- Vars
- P(b);N_GUARD,XP(G)::QAB(B)
- Refutation
- P(b);CHECK,N_SPINP(d),P_SPINP(b),XS(E)
- Try
- S(E);N_PINP(d)
- Vars
- K(c);N_SPINS(a),S_FLIGHT::S(H)
- P(b);N_GUARD,XP(G)::QAB(B)
- P(b);SBLOCK::B(C)+S(H),DCHECK
- Refutation
- P(g);XP(L)
- Try
- S(H);CHECK
- Vars
- K(c);N_SPINP(d),N_SPINS(a),S_FLIGHT::S(E)
- Refutation
- K(c);N_SPINP(d),N_SPINS(a),S_FLIGHT,XP(L)
- Try
- S(H);
- Vars
- K(c);N_SPINP(d),N_SPINS(a),S_FLIGHT::S(E)
- K(c);N_SPINP(d),N_SPINS(a),S_FLIGHT,XP(L)::S(E)
- P(g);SBLOCK,XP(L)::B(C)+S(E),XP(d)
- P(b);SBLOCK::B(C)+S(E),XS(a)
- Refutation
- P(b);XP(G)
- Try
- S(H);XP(b)
- Threat
- DUALS(5)
- Vars
- K(c);N_SPINP(d),N_SPINS(a),S_FLIGHT::S(E)
- Refutation
- P(e);XS(H)
- Try
- S(H);XP(e)
- Threat
- DUALS(2)
- Vars
- P(b);XP(G)::R1(J),XP(d)
- Refutation
- P(f);XS(H)
- Try
- R(A);CHECK,XS(a)
- Vars
- K(c);N_SPINP(d),S_FLIGHT,XP(L)::B(C)
- Refutation
- P(b);CHECK,XR(A)
- Try
- R(J);CHECK,XP(d)
- Refutation
- P(e);XR(J)
- Try
- Q(B);CHECK,XS(a)
- Refutation
- P(b);CHECK,N_SPINP(d),P_SPINP(b),XQ(B)
- Try
- Actual
- S(E);
- Vars
- K(c);N_SPINP(d),N_SPINS(a),S_FLIGHT::S(H)
- K(c);N_SPINP(d),N_SPINS(a),S_FLIGHT,XP(L)::S(H)
- P(b);N_GUARD,XP(G)::QAB(B)
- P(g);SBLOCK,XP(L)::B(C)+S(H),XP(e)
- P(b);SBLOCK::B(C)+S(H)
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).