MESON Chess Problem Database
Problem Display
PID: 84862 (1KQ5/1P4nB/r5N1/4pN2/2Ppk3/2PR1p2/4P3/2B3r1 w - - 0 1)
Petite, Efren
Boletim da UBP, 1962
#2
11 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxc1
- 2.Sg3#
- 1...Rd1
- 2.Sg3#
- 1...Re1
- 2.Sg3#
- 1...Rf1
- 2.Sg3#
- 1...Rh1
- 2.Sg3#
- 1...Rg3
- 2.Sxg3#
- 1...Rgxg6
- 2.Sg3#
- 1...Ra1
- 2.Sd6#
- 1...Ra2
- 2.Sd6#
- 1...Ra3
- 2.Sd6#
- 1...Ra4
- 2.Sd6#
- 1...Ra5
- 2.Sd6#
- 1...Rd6
- 2.Sxd6#
- 1...Raxg6
- 2.Sd6#
- 1...Ra7
- 2.Sd6#
- 1...Ra8+
- 2.bxa8Q#
- 2.bxa8B#
- 1...dxc3
- 2.Re3#
- 1...Rxc1
- Tries
- 1.Sgh4?
- threat
- 2.Sg3#
- 2.Sd6#
- 1...Ra8+
- 2.bxa8Q#
- 2.bxa8B#
- 1...Sxf5
- 2.Bxf5#
- 2.Qxf5#
- 1...Rg3
- 2.Sxg3#
- 2.Sd6#
- 1...Rgg6
- 2.Sg3#
- 1...Rd6
- 2.Sg3#
- 2.Sxd6#
- 1...Rag6
- 2.Sd6#
- 1...Rxc1!
- threat
- 1.Sge7?
- threat
- 2.Sg3#
- 2.Sd6#
- 1...Ra8+
- 2.bxa8Q#
- 2.bxa8B#
- 1...Sxf5
- 2.Bxf5#
- 2.Qxf5#
- 1...Rg3
- 2.Sxg3#
- 2.Sd6#
- 1...Rgg6
- 2.Sg3#
- 1...Rd6
- 2.Sg3#
- 2.Sxd6#
- 1...Rag6
- 2.Sd6#
- 1...Rxc1!
- threat
- 1.Sf8?
- threat
- 2.Sg3#
- 2.Sd6#
- 1...Ra8+
- 2.bxa8Q#
- 2.bxa8B#
- 1...Sxf5
- 2.Bxf5#
- 2.Qxf5#
- 1...Rg3
- 2.Sxg3#
- 2.Sd6#
- 1...Rgg6
- 2.Sg3#
- 1...Rd6
- 2.Sg3#
- 2.Sxd6#
- 1...Rag6
- 2.Sd6#
- 1...Rxc1!
- threat
- 1.Sh8?
- threat
- 2.Sg3#
- 2.Sd6#
- 1...Ra8+
- 2.bxa8Q#
- 2.bxa8B#
- 1...Sxf5
- 2.Bxf5#
- 2.Qxf5#
- 1...Rg3
- 2.Sxg3#
- 2.Sd6#
- 1...Rgg6
- 2.Sg3#
- 1...Rd6
- 2.Sg3#
- 2.Sxd6#
- 1...Rag6
- 2.Sd6#
- 1...Rxc1!
- threat
- 1.Sgh4?
- Keys
- 1.Sxd4!
- threat
- 2.Re3#
- 1...Ra8+
- 2.bxa8Q#
- 2.bxa8B#
- 1...Rxc1
- 2.Qg4#
- 1...Rgxg6
- 2.Qg4#
- 1...Raxg6
- 2.Qc6#
- 1...exd4
- 2.Rxd4#
- 1...Sf5
- 2.Qxf5#
- threat
- 1.Sxd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 2
- REMOVED MATES = 13
- Sets
- R(a);N_GUARD,XB(A)::S(F)
- R(a);N_GUARD::S(F)
- R(a);N_GUARD::S(F),XR(a)
- R(a);N_GUARD,XS(G)::S(F)
- R(f);N_GUARD::S(F)
- R(f);N_GUARD::S(F),XR(f)
- R(f);N_GUARD,XS(G)::S(F)
- R(f);CHECK,OGATE::PXR(f)=Q
- P(c);N_GUARD,XP(C)::R1(D)
- Tries
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(f);CHECK,OGATE::PXR(f)=Q
- R(a);::S(F)
- R(f);::S(F)
- Refutation
- R(a);XB(A)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(f);CHECK,OGATE::PXR(f)=Q
- R(a);::S(F)
- R(f);::S(F)
- Refutation
- R(a);XB(A)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(f);CHECK,OGATE::PXR(f)=Q
- R(a);::S(F)
- R(f);::S(F)
- Refutation
- R(a);XB(A)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- R(f);CHECK,OGATE::PXR(f)=Q
- R(a);::S(F)
- R(f);::S(F)
- Refutation
- R(a);XB(A)
- Try
- Actual
- S(F);XP(c)
- Threat
- R1(D)
- Vars
- R(f);CHECK,OGATE::PXR(f)=Q
- R(a);N_GUARD,XB(A)::QAR2(K)
- R(a);N_GUARD,P_SPINR(a),XS(G)::QAR2(K)
- R(f);N_GUARD,P_SPINR(f),XS(G)::QAB(K)
- P(e);OGATE,XS(F)::R1(D),XP(e)
- S(g);N_GUARD::QAB1(K),XS(g)
Developed and maintained by Brian Stephenson.
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