MESON Chess Problem Database
Problem Display
PID: 138756 (1B1Q1b2/8/1n1q2Np/1PnkNP2/1Pp1p2R/3PP3/7p/1KR5 w - - 0 1)
Guida, Marco
3rd HM., StrateGems, 2010
#2
12 + 9
| 145 | StrateGems | 2012 |
SOLUTION
- SOUND
- Sets
- 1...Qd7
- 2.Sf4#
- 1...Qxd8
- 2.Sf4#
- 1...Bg7
- 2.Qxd6#
- 1...Sb3
- 2.dxe4#
- 1...Sca4
- 2.dxe4#
- 1...Sa6
- 2.dxe4#
- 1...Se6
- 2.dxe4#
- 1...Sb7
- 2.dxe4#
- 1...Scd7
- 2.dxe4#
- 1...Sba4
- 2.dxc4#
- 1...Sbd7
- 2.dxc4#
- 1...Sa8
- 2.dxc4#
- 1...Sc8
- 2.dxc4#
- 1...cxd3
- 2.Rxc5#
- 1...exd3
- 2.Rd4#
- 1...Qd7
- Tries
- 1.Sf3?
- threat
- 2.Sf4#
- 1...exd3
- 2.Rd4#
- 1...exf3
- 2.Rd4#
- 1...Se6
- 2.dxe4#
- 1...Scd7
- 2.dxe4#
- 1...Sbd7
- 2.dxc4#
- 1...Sxd3!
- threat
- 1.Sxc4?
- threat
- 2.Sxb6#
- 2.Sf4#
- 1...Qxd8
- 2.Sf4#
- 1...Sxd3
- 2.Sxb6#
- 1...Sxc4
- 2.dxc4#
- 1...exd3
- 2.Sxb6#
- 2.Rd4#
- 1...Sca4
- 2.Sf4#
- 2.dxe4#
- 1...Se6
- 2.Sxb6#
- 2.dxe4#
- 1...Scd7
- 2.dxe4#
- 1...Sba4
- 2.Sf4#
- 1...Sa8
- 2.Sf4#
- 1...Sc8
- 2.Sf4#
- 1...Sbd7!
- threat
- 1.Sg4?
- threat
- 2.Sf6#
- 2.Sf4#
- 1...Qxd8
- 2.Sf4#
- 1...Sxd3
- 2.Sf6#
- 1...exd3
- 2.Sf6#
- 1...Be7
- 2.Sf4#
- 2.Sxe7#
- 1...Bg7
- 2.Sf4#
- 2.Se7#
- 2.Qxd6#
- 1...Se6
- 2.Sf6#
- 1...Sbd7
- 2.dxc4#
- 1...Scd7!
- threat
- 1.Sc6?
- threat
- 2.Sf4#
- 1...exd3
- 2.Rd4#
- 1...Se6
- 2.dxe4#
- 1...Scd7
- 2.dxe4#
- 1...Sbd7
- 2.dxc4#
- 1...Sxd3!
- threat
- 1.Sf7?
- threat
- 2.Sf4#
- 1...exd3
- 2.Rd4#
- 1...Se6
- 2.dxe4#
- 1...Scd7
- 2.dxe4#
- 1...Sbd7
- 2.dxc4#
- 1...Sxd3!
- threat
- 1.Se7+?
- 1...Kxe5
- 2.Qxd6#
- 1...Bxe7!
- 1...Kxe5
- 1.Qf6?
- threat
- 2.Sf4#
- 1...Qxe5
- 2.Qxe5#
- 2.Qc6#
- 1...exd3
- 2.Rd4#
- 1...Se6
- 2.dxe4#
- 1...Sxd3!
- threat
- 1.Qxf8?
- threat
- 2.Qxd6#
- 1...Qxe5
- 2.Qxc5#
- 1...Qxb8
- 2.Qxc5#
- 1...Qxf8
- 2.Sf4#
- 1...Qxg6
- 2.Qxc5#
- 1...Qe7
- 2.Sf4#
- 2.Sxe7#
- 1...Qc6
- 2.Sf4#
- 2.Se7#
- 1...Qe6
- 2.Sf4#
- 2.Qxc5#
- 1...Qf6
- 2.Sf4#
- 2.Qxc5#
- 1...Qd7
- 2.Sf4#
- 2.Qxc5#
- 1...Qd8
- 2.Sf4#
- 2.Qxc5#
- 1...Sb7
- 2.dxe4#
- 1...Sc8
- 2.dxc4#
- 1...Qc7!
- threat
- 1.Sf3?
- Keys
- 1.Sd7!
- threat
- 2.Sxb6#
- 2.Sf6#
- 1...Qxd7
- 2.Sf4#
- 1...Scxd7
- 2.dxe4#
- 1...Sbxd7
- 2.dxc4#
- 1...Qf6
- 2.Sf4#
- 2.Sxb6#
- 2.Sxf6#
- 1...Be7
- 2.Sxb6#
- 1...Bg7
- 2.Sxb6#
- 1...Sca4
- 2.Sf6#
- 2.dxe4#
- 1...Sba4
- 2.Sf6#
- 2.dxc4#
- 1...Sa8
- 2.Sf6#
- 2.dxc4#
- 1...Sc8
- 2.Sf6#
- 2.dxc4#
- threat
- 1.Sd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 11
- Sets
- Q(g);::S(J)
- Q(g);N_SPINQ(g),XQ(L)::S(J)
- B(i);N_GUARD::QAR1(L),XQ(g)
- S(d);N_GUARD::P(C),XP(c)
- S(d);N_GUARD,N_SPINQ(g)::P(C),XP(c)
- S(f);N_GUARD::P(C),XP(b)
- S(f);N_GUARD,N_SPINQ(g)::P(C),XP(b)
- P(b);OGATE,XP(C)::R1(B),XS(d)
- P(c);OGATE,XP(C)::R1(F)
- Tries
- Try
- S(H);
- Threat
- S(J)
- Vars
- P(c);OGATE,XP(C)::R1(F)
- P(c);OGATE,XS(H)::R1(F)
- S(d);N_GUARD::P(C),XP(c)
- S(d);N_GUARD,N_SPINQ(g)::P(C),XP(c)
- S(f);N_GUARD,N_SPINQ(g)::P(C),XP(b)
- Refutation
- S(d);XP(C)
- Try
- S(H);XP(b)
- Threat
- DUALS(2)
- Vars
- Q(g);N_SPINQ(g),XQ(L)::S(J)
- S(d);XP(C)::S(H),XS(f)
- S(f);OGATE,XS(H)::P(C),XS(f)
- S(d);N_GUARD,N_SPINQ(g)::P(C),XP(c)
- S(f);::S(J)
- Refutation
- S(f);N_SPINQ(g)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- Q(g);N_SPINQ(g),XQ(L)::S(J)
- S(d);XP(C)::S(H)
- P(c);XP(C)::S(H)
- S(d);::S(H)
- S(f);N_GUARD,N_SPINQ(g)::P(C),XP(b)
- Refutation
- S(d);N_SPINQ(g)
- Try
- S(H);
- Threat
- S(J)
- Vars
- P(c);OGATE,XP(C)::R1(F)
- S(d);N_GUARD::P(C),XP(c)
- S(d);N_GUARD,N_SPINQ(g)::P(C),XP(c)
- S(f);N_GUARD,N_SPINQ(g)::P(C),XP(b)
- Refutation
- S(d);XP(C)
- Try
- S(H);
- Threat
- S(J)
- Vars
- P(c);OGATE,XP(C)::R1(F)
- S(d);N_GUARD::P(C),XP(c)
- S(d);N_GUARD,N_SPINQ(g)::P(C),XP(c)
- S(f);N_GUARD,N_SPINQ(g)::P(C),XP(b)
- Refutation
- S(d);XP(C)
- Try
- S(J);CHECK
- Vars
- K(e);P-FLIGHT,XS(H)::QAB1(L),XQ(g)
- Refutation
- B(i);XS(J)
- Try
- Q(L);N_PINQ(g)
- Threat
- S(J)
- Vars
- P(c);OGATE,XP(C)::R1(F)
- S(d);N_GUARD::P(C),XP(c)
- Refutation
- S(d);XP(C)
- Try
- Q(L);N_PINQ(g),XB(i)
- Threat
- QAR1(L),XQ(g)
- Vars
- Q(g);OGATE,XS(H)::QAR1(L),XS(d)
- Q(g);OGATE,XB(K)::QAR1(L),XS(d)
- Q(g);XQ(L)::S(J)
- Q(g);OGATE,XS(J)::QAR1(L),XS(d)
- S(d);N_GUARD::P(C),XP(c)
- S(f);N_GUARD::P(C),XP(b)
- Refutation
- Q(g);
- Try
- Actual
- S(H);N_PINQ(g)
- Threat
- DUALS(2)
- Vars
- Q(g);N_GUARD,P_SPINQ(g),XS(H)::S(J)
- S(d);N_GUARD,XS(H)::P(C),XP(c)
- S(f);N_GUARD,XS(H)::P(C),XP(b)
- B(i);::S(H),XS(f)
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