MESON Chess Problem Database
Problem Display
PID: 91471 (1B5r/q1rP1R1p/1p3P1b/1N2kB2/n1Qp1RP1/5PP1/4N3/2Kb4 w - - 0 1)
Wielgos, Oskar
Probleemblad, 1963
#2
13 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qa5
- 2.Bxc7#
- 1...Qa6
- 2.Bxc7#
- 1...Qa8
- 2.Bxc7#
- 1...Re8
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bc2
- 2.Qe6#
- 2.Qxd4#
- 1...Bxf4+
- 2.gxf4#
- 1...Bg7
- 2.Re4#
- 1...Bf8
- 2.Re4#
- 1...Sc3
- 2.Qe6#
- 2.Qxd4#
- 1...Sc5
- 2.Qxd4#
- 1...Qa5
- Tries
- 1.Kd2?
- threat
- 2.Qe6#
- 2.Qxd4#
- 1...Bxf4+
- 2.gxf4#
- 1...Re8
- 2.Qxd4#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bb3
- 2.Qxd4#
- 1...Sc5
- 2.Qxd4#
- 1...d3
- 2.Qe6#
- 2.Qd4#
- 2.Qe4#
- 1...Qa5+!
- threat
- 1.Sec3?
- threat
- 2.Qd5#
- 2.Qe6#
- 2.Qxd4#
- 1...Bxf3
- 2.Qe6#
- 2.Qxd4#
- 1...Sxc3
- 2.Qe6#
- 2.Qxd4#
- 1...dxc3
- 2.Qe6#
- 2.Qd4#
- 2.Qe4#
- 1...Qb7
- 2.Qe6#
- 2.Qxd4#
- 1...Qa8
- 2.Bxc7#
- 2.Qe6#
- 2.Qxd4#
- 2.Qxc7#
- 1...Re8
- 2.Qd5#
- 2.Qxd4#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bb3
- 2.Qe2#
- 2.Qxd4#
- 1...Sc5
- 2.Qd5#
- 2.Qxd4#
- 1...d3
- 2.Qd5#
- 2.Qe6#
- 2.Qd4#
- 2.Qe4#
- 1...Bxf4+!
- threat
- 1.Sbc3?
- threat
- 2.Qd5#
- 2.Qe6#
- 2.Qxd4#
- 1...Kd6
- 2.Qd5#
- 1...Sxc3
- 2.Qe6#
- 2.Qxd4#
- 1...dxc3
- 2.Qe6#
- 2.Qd4#
- 1...Qa5
- 2.Bxc7#
- 2.Qe6#
- 2.Qxd4#
- 2.Qxc7#
- 1...Qb7
- 2.Qe6#
- 2.Qxd4#
- 1...Qa8
- 2.Bxc7#
- 2.Qe6#
- 2.Qxd4#
- 2.Qxc7#
- 1...Re8
- 2.Qd5#
- 2.Qxd4#
- 1...Bb3
- 2.Qxd4#
- 1...Sc5
- 2.Qd5#
- 2.Qxd4#
- 1...d3
- 2.Qd5#
- 2.Qe6#
- 2.Qd4#
- 1...b5
- 2.Qd5#
- 2.Qe6#
- 1...Bxf4+!
- threat
- 1.Sxc7?
- threat
- 2.Qd5#
- 2.Qe6#
- 2.Qxd4#
- 1...Kd6
- 2.Sb5#
- 2.Se8#
- 2.Qd5#
- 1...Qxc7
- 2.Bxc7#
- 1...Qa5
- 2.Se8#
- 2.Qe6#
- 2.Qxd4#
- 1...Qb7
- 2.Qe6#
- 2.Qxd4#
- 1...Qa8
- 2.Qe6#
- 2.Qxd4#
- 1...Re8
- 2.Qd5#
- 2.Qxd4#
- 1...Bb3
- 2.Qxd4#
- 1...Sc3
- 2.Qe6#
- 2.Qxd4#
- 1...Sc5
- 2.Qd5#
- 2.Qxd4#
- 1...d3
- 2.Qd5#
- 2.Qe6#
- 2.Qd4#
- 1...b5
- 2.Qd5#
- 2.Qe6#
- 1...Bxf4+!
- threat
- 1.Bb1?
- threat
- 2.Re7#
- 1...Bxf4+
- 2.gxf4#
- 1...Re8
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bf8
- 2.Re4#
- 2.Rf5#
- 1...Sc5!
- threat
- 1.Bc2?
- threat
- 2.Re7#
- 1...Bxf4+
- 2.gxf4#
- 1...Re8
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bf8
- 2.Re4#
- 2.Rf5#
- 1...Sc5!
- threat
- 1.Bd3?
- threat
- 2.Re7#
- 1...Bxf4+
- 2.gxf4#
- 1...Re8
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bf8
- 2.Re4#
- 2.Rf5#
- 1...Sc5!
- threat
- 1.Bg6?
- threat
- 2.Re7#
- 1...Bxf4+
- 2.gxf4#
- 1...Re8
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bf8
- 2.Re4#
- 2.Rf5#
- 1...Sc5!
- threat
- 1.Qc6?
- threat
- 2.Re7#
- 1...Bxf4+
- 2.gxf4#
- 1...Sc5
- 2.Qd6#
- 1...Re8
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bf8
- 2.Re4#
- 1...Bb3!
- threat
- 1.d8Q?
- threat
- 2.Qe7#
- 2.Qxd4#
- 2.Qd5#
- 2.Qd6#
- 1...Bxf4+
- 2.gxf4#
- 1...Qxb8
- 2.Qxd4#
- 2.Qd5#
- 2.Qd6#
- 1...Sc5
- 2.Qcd5#
- 2.Qcxd4#
- 2.Qdxd4#
- 2.Qdd5#
- 2.Qd6#
- 1...Qb7
- 2.Qe7#
- 2.Qxd4#
- 2.Qd6#
- 1...Qa8
- 2.Bxc7#
- 2.Qdxc7#
- 2.Qe7#
- 2.Qcxc7#
- 2.Qxd4#
- 2.Qd6#
- 1...Re8
- 2.Qxd4#
- 2.Qd5#
- 2.Qd6#
- 2.Qxe8#
- 1...Bf8
- 2.Re4#
- 2.Qxd4#
- 2.Qd5#
- 1...Sc3
- 2.Qe6#
- 2.Qe7#
- 2.Qcxd4#
- 2.Qdxd4#
- 2.Qd6#
- 1...d3
- 2.Qe7#
- 2.Qd4#
- 2.Qd5#
- 2.Qd6#
- 1...Rxd8!
- threat
- 1.Kd2?
- Keys
- 1.Be4!
- threat
- 2.Re7#
- 1...Bxf4+
- 2.gxf4#
- 1...Sc5
- 2.Qd5#
- 1...Re8
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bf8
- 2.Rf5#
- threat
- 1.Be4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- Q(g);N_GUARD::B(M),XR(h)
- R(j);OGATE::PXR(j)=Q
- B(f);CHECK,OGATE,XR(F)::P(D),XB(f)
- B(f);N_PINR(F)::R1(F)
- S(b);N_PINQ(E)::QAB1(E),XP(c)
- Tries
- Try
- K(A);N_SPINQ(E),S_FLIGHT
- Threat
- DUALS(2)
- Vars
- B(f);CHECK,OGATE,XR(F)::P(D),XB(f)
- B(a);::QAB1(E),XP(c)
- S(b);::QAB1(E),XP(c)
- Refutation
- Q(g);CHECK
- Try
- S(B);N_SPINQ(E)
- Threat
- DUALS(3)
- Refutation
- B(f);CHECK,XR(F)
- Try
- S(H);N_SPINQ(E)
- Threat
- DUALS(3)
- Vars
- K(d);S_FLIGHT::QAR1(E)
- B(a);::QAB1(E),XP(c)
- Refutation
- B(f);CHECK,XR(F)
- Try
- S(H);N_SPINQ(E),XR(h)
- Threat
- DUALS(3)
- Vars
- Q(g);OGATE,P_PINQ(E),P_SPINQ(g),XS(H)::B(M),XQ(g)
- B(a);::QAB1(E),XP(c)
- Refutation
- B(f);CHECK,XR(F)
- Try
- B(I);
- Threat
- R(L)
- Vars
- B(f);CHECK,OGATE,XR(F)::P(D),XB(f)
- R(j);OGATE::PXR(j)=Q
- Refutation
- S(b);N_PINQ(E)
- Try
- B(I);N_SPINQ(E)
- Threat
- R(L)
- Vars
- B(f);CHECK,OGATE,XR(F)::P(D),XB(f)
- R(j);OGATE::PXR(j)=Q
- Refutation
- S(b);
- Try
- B(I);
- Threat
- R(L)
- Vars
- B(f);CHECK,OGATE,XR(F)::P(D),XB(f)
- R(j);OGATE::PXR(j)=Q
- Refutation
- S(b);N_PINQ(E)
- Try
- B(I);
- Threat
- R(L)
- Vars
- B(f);CHECK,OGATE,XR(F)::P(D),XB(f)
- R(j);OGATE::PXR(j)=Q
- Refutation
- S(b);N_PINQ(E)
- Try
- Q(E);
- Threat
- R(L)
- Vars
- B(f);CHECK,OGATE,XR(F)::P(D),XB(f)
- S(b);N_PINQ(E)::QAB1(E)
- R(j);OGATE::PXR(j)=Q
- B(f);N_PINR(F)::R1(F)
- Refutation
- B(a);
- Try
- P(K);
- Threat
- DUALS(4)
- Vars
- B(f);CHECK,OGATE,XR(F)::P(D),XB(f)
- Refutation
- R(j);XQ(K)
- Try
- Actual
- B(I);
- Threat
- R(L)
- Vars
- B(f);CHECK,OGATE,XR(F)::P(D),XB(f)
- S(b);N_PINQ(E)::QAR1(E)
- R(j);OGATE::PXR(j)=Q
- B(f);N_PINR(F)::R1(F)
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).