MESON Chess Problem Database
Problem Display
PID: 136297 (4nr1b/P2RR2B/pP1r4/3Npn1b/q1pNk3/2Pp2P1/3P1QK1/8 w - - 0 1)
Bourd, Evgeny
Source?, 0000
#2
12 + 12
| 6490 | yacpdb | 2010 |
SOLUTION
- SOUND
- Sets
- 1...Rxd5
- 2.Qe3#
- 2.Qf4#
- 1...Rxb6
- 2.Qe3#
- 2.Qf4#
- 1...Rc6
- 2.Qe3#
- 2.Qf4#
- 1...Re6
- 2.Qe3#
- 1...Rdf6
- 2.Qe3#
- 2.Qf4#
- 1...Rg6
- 2.Qf4#
- 1...Rh6
- 2.Qe3#
- 2.Qf4#
- 1...Bf3+
- 2.Qxf3#
- 1...Bg6
- 2.Qf3#
- 1...Bf7
- 2.Qf3#
- 1...Rxd5
- Tries
- 1.Sc2?
- threat
- 2.Qd4#
- 1...Bf3+
- 2.Qxf3#
- 1...Rxd5
- 2.Qe3#
- 2.Qf4#
- 1...Re6
- 2.Qe3#
- 1...Rg6
- 2.Qf4#
- 1...Bg6
- 2.Qf3#
- 1...Kxd5!
- threat
- 1.Se2?
- threat
- 2.Qd4#
- 1...Bf3+
- 2.Qxf3#
- 1...Rxd5
- 2.Qe3#
- 2.Qf4#
- 1...Re6
- 2.Qe3#
- 1...Rg6
- 2.Qf4#
- 1...Bg6
- 2.Qf3#
- 1...Kxd5!
- threat
- 1.Sxf5?
- threat
- 2.Qd4#
- 1...Bf3+
- 2.Qxf3#
- 1...Rxd5
- 2.Sd6#
- 2.Qe3#
- 2.Qf4#
- 1...Re6
- 2.Qe3#
- 1...Rg6
- 2.Qf4#
- 1...Bg6
- 2.Qf3#
- 1...Kxd5!
- threat
- 1.Sc6?
- threat
- 2.Qd4#
- 1...Bf3+
- 2.Qxf3#
- 1...Rxd5
- 2.Qe3#
- 2.Qf4#
- 1...Re6
- 2.Qe3#
- 1...Rg6
- 2.Qf4#
- 1...Bg6
- 2.Qf3#
- 1...Kxd5!
- threat
- 1.Se3?
- threat
- 2.Qf4#
- 1...Bf3+
- 2.Qxf3#
- 1...Re6!
- threat
- 1.Sb4?
- threat
- 2.Qe3#
- 2.Qf4#
- 1...Bf3+
- 2.Qxf3#
- 1...Re6
- 2.Qe3#
- 1...Rg6
- 2.Qf4#
- 1...Bg6
- 2.Qf3#
- 2.Qf4#
- 1...Qxb4!
- threat
- 1.Sf4?
- threat
- 2.Qe3#
- 1...Bf3+
- 2.Qxf3#
- 1...Bg6
- 2.Qf3#
- 1...Rg6!
- threat
- 1.Sc7?
- threat
- 2.Qe3#
- 2.Qf4#
- 1...Bf3+
- 2.Qxf3#
- 1...Rg6
- 2.Qf4#
- 1...Re6
- 2.Qe3#
- 1...Bg6
- 2.Qf3#
- 2.Qf4#
- 1...Sxc7!
- threat
- 1.Rxd6?
- threat
- 2.Qe3#
- 2.Qf4#
- 1...Bf3+
- 2.Qxf3#
- 1...Bg6
- 2.Qf3#
- 2.Qf4#
- 1...Sxd6!
- threat
- 1.a8Q?
- threat
- 2.Sf6#
- 2.Qe3#
- 2.Qf4#
- 1...Bf3+
- 2.Qxf3#
- 1...Rxd5
- 2.Qe3#
- 2.Qxd5#
- 2.Qf4#
- 1...Rg6
- 2.Sf6#
- 2.Qf4#
- 1...Rc6
- 2.Qe3#
- 2.Qf4#
- 1...Re6
- 2.Sf6#
- 2.Qe3#
- 1...Rdf6
- 2.Sxf6#
- 2.Qe3#
- 2.Qf4#
- 1...Rff6
- 2.Sxf6#
- 2.Qe3#
- 2.Qf4#
- 1...Bg6
- 2.Sf6#
- 2.Qf3#
- 2.Qf4#
- 1...Bf6
- 2.Sxf6#
- 2.Bxf5#
- 2.Qe3#
- 2.Qf4#
- 2.Qxf5#
- 1...Sf6
- 2.Sxf6#
- 2.Bxf5#
- 2.Qe3#
- 2.Qf4#
- 2.Qxf5#
- 1...Qc6!
- threat
- 1.a8B?
- threat
- 2.Sf6#
- 2.Qe3#
- 2.Qf4#
- 1...Bf3+
- 2.Qxf3#
- 1...Rxd5
- 2.Bxd5#
- 2.Qe3#
- 2.Qf4#
- 1...Rg6
- 2.Sf6#
- 2.Qf4#
- 1...Rc6
- 2.Qe3#
- 2.Qf4#
- 1...Re6
- 2.Sf6#
- 2.Qe3#
- 1...Rdf6
- 2.Sxf6#
- 2.Qe3#
- 2.Qf4#
- 1...Rff6
- 2.Sxf6#
- 2.Qe3#
- 2.Qf4#
- 1...Bg6
- 2.Sf6#
- 2.Qf3#
- 2.Qf4#
- 1...Bf6
- 2.Sxf6#
- 2.Bxf5#
- 2.Qe3#
- 2.Qf4#
- 2.Qxf5#
- 1...Sf6
- 2.Sxf6#
- 2.Bxf5#
- 2.Qe3#
- 2.Qf4#
- 2.Qxf5#
- 1...Qc6!
- threat
- 1.Sc2?
- Keys
- 1.Sb5!
- threat
- 2.Qd4#
- 1...Bf3+
- 2.Qxf3#
- 1...Kxd5
- 2.a8Q#
- 2.a8B#
- 1...Rxd5
- 2.Qe3#
- 2.Qf4#
- 1...Re6
- 2.Qe3#
- 1...Rg6
- 2.Qf4#
- 1...Bg6
- 2.Qf3#
- threat
- 1.Sb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- R(i);N_SPINP(e)::QAR1(B)
- R(i);N_SPINS(f),P_PINP(E)::QAR1(B)
- B(g);CHECK,N_GUARD::QAB1(B),XB(g)
- B(g);N_GUARD,N_SPINS(f)::QAB1(B)
- B(g);N_GUARD::QAB1(B)
- Tries
- Try
- S(F);
- Threat
- QAR1(B)
- Vars
- B(g);CHECK,N_GUARD::QAB1(B),XB(g)
- R(i);N_SPINP(e)::QAR1(B)
- R(i);N_SPINS(f),P_PINP(E)::QAR1(B)
- B(g);N_GUARD,N_SPINS(f)::QAB1(B)
- Refutation
- K(d);N_SPINP(e),N_SPINS(f),P_SPINR(i),S_FLIGHT,XS(G)
- Try
- S(F);
- Threat
- QAR1(B)
- Vars
- B(g);CHECK,N_GUARD::QAB1(B),XB(g)
- R(i);N_SPINP(e)::QAR1(B)
- R(i);N_SPINS(f),P_PINP(E)::QAR1(B)
- B(g);N_GUARD,N_SPINS(f)::QAB1(B)
- Refutation
- K(d);N_SPINP(e),N_SPINS(f),P_SPINR(i),S_FLIGHT,XS(G)
- Try
- S(F);XS(f)
- Threat
- QAR1(B)
- Vars
- B(g);CHECK,N_GUARD::QAB1(B),XB(g)
- R(i);N_SPINP(e)::QAR1(B)
- R(i);P_PINP(E)::QAR1(B)
- B(g);N_GUARD::QAB1(B)
- Refutation
- K(d);N_SPINP(e),P_SPINR(i),S_FLIGHT,XS(G)
- Try
- S(F);
- Threat
- QAR1(B)
- Vars
- B(g);CHECK,N_GUARD::QAB1(B),XB(g)
- R(i);N_SPINP(e)::QAR1(B)
- R(i);N_SPINS(f),P_PINP(E)::QAR1(B)
- B(g);N_GUARD,N_SPINS(f)::QAB1(B)
- Refutation
- K(d);N_SPINP(e),N_SPINS(f),P_SPINR(i),S_FLIGHT,XS(G)
- Try
- S(G);
- Threat
- QAR1(B)
- Vars
- B(g);CHECK,N_GUARD::QAB1(B),XB(g)
- Refutation
- R(i);N_SPINP(e)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- B(g);CHECK,N_GUARD::QAB1(B),XB(g)
- R(i);N_SPINP(e)::QAR1(B)
- R(i);N_SPINS(f),P_PINP(E)::QAR1(B)
- Refutation
- Q(b);XS(G)
- Try
- S(G);
- Threat
- QAR1(B)
- Vars
- B(g);CHECK,N_GUARD::QAB1(B),XB(g)
- B(g);N_GUARD,N_SPINS(f)::QAB1(B)
- Refutation
- R(i);N_SPINS(f),P_PINP(E)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- B(g);CHECK,N_GUARD::QAB1(B),XB(g)
- R(i);N_SPINS(f),P_PINP(E)::QAR1(B)
- R(i);N_SPINP(e)::QAR1(B)
- Refutation
- S(j);XS(G)
- Try
- R(J);XR(i)
- Threat
- DUALS(2)
- Vars
- B(g);CHECK,N_GUARD::QAB1(B),XB(g)
- Refutation
- S(j);XR(J)
- Try
- P(I);
- Threat
- DUALS(3)
- Vars
- B(g);CHECK,N_GUARD::QAB1(B),XB(g)
- Refutation
- Q(b);
- Try
- P(I);
- Threat
- DUALS(3)
- Vars
- B(g);CHECK,N_GUARD::QAB1(B),XB(g)
- Refutation
- Q(b);
- Try
- Actual
- S(F);
- Threat
- QAR1(B)
- Vars
- B(g);CHECK,N_GUARD::QAB1(B),XB(g)
- K(d);N_SPINP(e),N_SPINS(f),P_SPINR(i),S_FLIGHT,XS(G)::P=Q
- R(i);N_SPINP(e)::QAR1(B)
- R(i);N_SPINS(f),P_PINP(E)::QAR1(B)
- B(g);N_GUARD,N_SPINS(f)::QAB1(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).