MESON Chess Problem Database
Problem Display
PID: 249769 (b7/4p3/RPnkN3/R1p1NPp1/B1PP4/6K1/3p3B/8 w - - 0 1)
Petkov, Petko Andonov
Stella Polaris, 1969
#2
11 + 7
SOLUTION
- SOUND
- Sets
- 1...Sb4
- 2.Sf7#
- 1...Sxd4
- 2.Sf7#
- 1...Sxa5
- 2.Sf7#
- 1...Sxe5
- 2.dxc5#
- 1...Sa7
- 2.Sf7#
- 1...Sb8
- 2.Sf7#
- 1...cxd4
- 2.Rd5#
- 1...Sb4
- Tries
- 1.Kf2?
- threat
- 2.dxc5#
- 1...Sxd4
- 2.Sd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...cxd4
- 2.Rd5#
- 1...d1S+!
- threat
- 1.Kh3?
- threat
- 2.dxc5#
- 1...Sxd4
- 2.Sd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sg6#
- 2.Sd7#
- 2.Sf7#
- 1...cxd4
- 2.Rd5#
- 1...g4+!
- threat
- 1.Sc7?
- threat
- 2.Sb5#
- 2.Se8#
- 1...Sxd4
- 2.Sf7#
- 1...Sxe5
- 2.Se8#
- 2.dxc5#
- 1...cxd4
- 2.Se8#
- 2.Rd5#
- 1...Sa7
- 2.Sf7#
- 2.Se8#
- 1...e6!
- threat
- 1.Sg7?
- threat
- 2.Se8#
- 1...Sxd4
- 2.Sf7#
- 1...e6!
- threat
- 1.Rxc5?
- threat
- 2.Rd5#
- 1...Sxd4
- 2.Sf7#
- 1...Sxe5
- 2.dxe5#
- 1...Sb4
- 2.Sf7#
- 1...Sa5
- 2.Sf7#
- 1...Sa7
- 2.Sf7#
- 1...Sb8
- 2.Sf7#
- 1...Sd8!
- threat
- 1.Ra7?
- threat
- 2.Sf7#
- 2.Rd7#
- 1...Sxd4
- 2.Sf7#
- 1...Sxe5
- 2.dxc5#
- 1...Sxa7
- 2.Sf7#
- 1...Sb8
- 2.Sf7#
- 1...Sd8
- 2.Rd7#
- 1...Bb7!
- threat
- 1.b7?
- threat
- 2.Rxc6#
- 2.b8Q#
- 2.b8B#
- 1...cxd4
- 2.Rd5#
- 2.Rxc6#
- 2.b8Q#
- 2.b8B#
- 1...d1Q
- 2.Rxc6#
- 2.b8Q#
- 2.b8B#
- 1...d1S
- 2.Rxc6#
- 2.b8Q#
- 2.b8B#
- 1...d1B
- 2.Rxc6#
- 2.b8Q#
- 2.b8B#
- 1...d1R
- 2.Rxc6#
- 2.b8Q#
- 2.b8B#
- 1...g4
- 2.Rxc6#
- 2.b8Q#
- 2.b8B#
- 1...Bxb7!
- threat
- 1.Kf2?
- Keys
- 1.Kg2!
- threat
- 2.dxc5#
- 1...Sb4+
- 2.Sf3#
- 1...Sxd4+
- 2.Sf3#
- 1...Sxa5+
- 2.Sf3#
- 1...Sxe5+
- 2.b7#
- 1...Sa7+
- 2.Sf3#
- 1...Sb8+
- 2.Sf3#
- 1...Sd8+
- 2.Sf3#
- 1...cxd4
- 2.Rd5#
- threat
- 1.Kg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 6
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(d);::S(G)
- S(d);XP(E)::S(G)
- S(d);XR(F)::S(G)
- S(d);SBLOCK,XS(G)::P(E),XP(b)
- P(b);OGATE,XP(E)::R1(F)
- Tries
- Try
- K(B);S_FLIGHT
- Threat
- P(E),XP(b)
- Vars
- P(b);OGATE,XP(E)::R1(F)
- Refutation
- P(a);CHECK
- Try
- K(B);P-FLIGHT
- Threat
- P(E),XP(b)
- Vars
- P(b);OGATE,XP(E)::R1(F)
- Refutation
- P(c);CHECK
- Try
- S(K);
- Threat
- DUALS(2)
- Vars
- S(d);XP(E)::S(G)
- Refutation
- P(f);
- Try
- S(K);
- Threat
- S(K)
- Vars
- S(d);XP(E)::S(G)
- Refutation
- P(f);
- Try
- R(F);XP(b)
- Threat
- R1(F)
- Vars
- S(d);XP(E)::S(G)
- S(d);OGATE,XS(G)::P(E),XS(d)
- S(d);::S(G)
- Refutation
- S(d);
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- S(d);XP(E)::S(G)
- S(d);SBLOCK,XS(G)::P(E),XP(b)
- S(d);XR(I)::S(G)
- S(d);::S(G)
- S(d);::R1(I)
- Refutation
- B(g);
- Try
- P(J);P_PINS(d)
- Threat
- DUALS(3)
- Refutation
- B(g);XP(J)
- Try
- Actual
- K(B);P-FLIGHT
- Threat
- P(E),XP(b)
- Vars
- S(d);CHECK,N_GUARD::B(A)+S(G)
- S(d);CHECK,N_GUARD,XP(E)::B(A)+S(G)
- S(d);CHECK,N_GUARD,XR(F)::B(A)+S(G)
- S(d);CHECK,P_SPINS(d),XS(G)::R(I)+P(J)
- P(b);OGATE,XP(E)::R1(F)
Developed and maintained by Brian Stephenson.
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