MESON Chess Problem Database
Problem Display
PID: 225721 (1r4R1/p1RPN1pr/4k1Pb/2P4N/p2pKBPQ/1q6/BP6/8 w - - 0 1)
Pribyl, Vaclav
Praca, 1956
#2
13 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qc4
- 2.Bxc4#
- 1...Qd5+
- 2.Bxd5#
- 1...Rb4
- 2.d8S#
- 1...Rb5
- 2.d8S#
- 1...Rb6
- 2.d8S#
- 1...Rb7
- 2.d8S#
- 1...Rc8
- 2.dxc8Q#
- 2.dxc8B#
- 1...Bxf4
- 2.Sxf4#
- 1...Qc4
- Tries
- 1.Kxd4?
- threat
- 2.Qe1#
- 1...Qc4+
- 2.Bxc4#
- 1...Qd5+
- 2.Bxd5#
- 1...Bxf4
- 2.Sxf4#
- 1...Rb4+!
- threat
- 1.Sf5?
- threat
- 2.Sxd4#
- 2.Qe7#
- 1...Qd5+
- 2.Bxd5#
- 1...Rb4
- 2.Re8#
- 2.Qe7#
- 2.d8S#
- 1...Re8
- 2.Sxd4#
- 2.Rxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...d3
- 2.Sd4#
- 2.Qe7#
- 1...Bg5!
- threat
- 1.Sc6?
- threat
- 2.Sxd4#
- 2.Qe7#
- 1...Qd5+
- 2.Bxd5#
- 1...Rb4
- 2.Sd8#
- 2.Re8#
- 2.Qe7#
- 2.d8S#
- 1...Re8
- 2.Sxd4#
- 2.Rxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...d3
- 2.Sd4#
- 2.Qe7#
- 1...Bg5!
- threat
- 1.Sc8?
- threat
- 2.Re8#
- 2.Qe7#
- 2.d8S#
- 1...Qd5+
- 2.Bxd5#
- 1...Rxc8
- 2.dxc8Q#
- 2.dxc8B#
- 1...Rh8
- 2.Qe7#
- 2.d8S#
- 1...Bg5!
- threat
- 1.Bxb3+?
- 1...Rxb3
- 2.d8S#
- 1...axb3!
- 1...Rxb3
- 1.Bxh6?
- threat
- 2.Sf4#
- 1...Qd5+
- 2.Bxd5#
- 1...Rf8!
- threat
- 1.Rxb8?
- threat
- 2.d8S#
- 1...Qd5+
- 2.Bxd5#
- 1...Rh8!
- threat
- 1.Rgc8?
- threat
- 2.d8S#
- 1...Qd5+
- 2.Bxd5#
- 1...Rxc8
- 2.dxc8Q#
- 2.dxc8B#
- 1...Rh8!
- threat
- 1.Qg5?
- threat
- 2.Qe5#
- 1...Qd5+
- 2.Bxd5#
- 1...Bxg5!
- threat
- 1.d8Q?
- threat
- 2.Rc6#
- 2.Qd6#
- 2.Qd7#
- 1...Qd5+
- 2.Bxd5#
- 2.Qxd5#
- 1...Bxf4
- 2.Sxf4#
- 2.Qd7#
- 1...Rb6
- 2.Qd7#
- 2.Qc8#
- 1...Rc8
- 2.Qd6#
- 2.Qd7#
- 2.Qxc8#
- 1...Rxd8!
- threat
- 1.Kxd4?
- Keys
- 1.Qe1!
- threat
- 2.Kxd4#
- 1...Qd5+
- 2.Kd3#
- 1...Kxe7
- 2.d8S#
- 1...Bxf4
- 2.Kxf4#
- 1...Qc4
- 2.Kf3#
- 1...Rb4
- 2.d8S#
- 1...d3
- 2.Kf3#
- 2.Kd4#
- threat
- 1.Qe1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- Q(a);OGATE::B(A),XQ(a)
- Q(a);CHECK,OGATE::B(A),XQ(a)
- R(i);N_GUARD::P=S
- R(i);OGATE::PXR(i)=Q
- B(e);XB(D)::S(H),XB(e)
- Tries
- Try
- K(C);P-FLIGHT,XP(c)
- Threat
- QAR(F)
- Vars
- Q(a);CHECK,OGATE::B(A),XQ(a)
- B(e);XB(D)::S(H),XB(e)
- Refutation
- R(i);CHECK
- Try
- S(L);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,OGATE::B(A),XQ(a)
- Refutation
- B(e);
- Try
- S(L);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,OGATE::B(A),XQ(a)
- Refutation
- B(e);
- Try
- S(L);
- Threat
- DUALS(3)
- Vars
- Q(a);CHECK,OGATE::B(A),XQ(a)
- R(i);OGATE,XS(L)::PXR(i)=Q
- Refutation
- B(e);
- Try
- B(A);CHECK,XQ(a)
- Vars
- R(i);N_GUARD,S_CUTP(b),XB(A)::P=S
- Refutation
- P(b);XB(A)
- Try
- B(D);XB(e)
- Threat
- S(H)
- Vars
- Q(a);CHECK,OGATE::B(A),XQ(a)
- Refutation
- R(i);
- Try
- R(M);XR(i)
- Threat
- P=S
- Vars
- Q(a);CHECK,OGATE::B(A),XQ(a)
- Refutation
- R(h);
- Try
- R(M);
- Threat
- P=S
- Vars
- Q(a);CHECK,OGATE::B(A),XQ(a)
- R(i);OGATE,XR(M)::PXR(i)=Q
- Refutation
- R(h);
- Try
- Q(F);
- Threat
- QAR1(F)
- Vars
- Q(a);CHECK,OGATE::B(A),XQ(a)
- Refutation
- B(e);XQ(F)
- Try
- P(K);
- Threat
- DUALS(3)
- Refutation
- R(i);XQ(K)
- Try
- Actual
- Q(F);
- Threat
- QAR(F)+K(C),XP(c)
- Vars
- Q(a);CHECK::QAR(F)+K(C)
- K(d);N_SPINQ(a),P-FLIGHT,XS(L)::P=S
- B(e);XB(D)::QAR(F)+K(C),XB(e)
- Q(a);::QAR(F)+K(C)
- R(i);N_GUARD::P=S
Developed and maintained by Brian Stephenson.
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