MESON Chess Problem Database
Problem Display
PID: 107802 (8/1p1N3p/1B6/3pN3/R1bnkr2/1pR1P2Q/4Bb2/1K6 w - - 0 1)
Brabec, Juraj
Vecherni Kharkov TT, 1985
#2
9 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rg4
- 2.Qxg4#
- 1...Bxe3
- 2.Rxe3#
- 1...Bxe2
- 2.Rxd4#
- 1...Bd3+
- 2.Bxd3#
- 1...Bb5
- 2.Rxd4#
- 1...Ba6
- 2.Rxd4#
- 1...Sc2
- 2.Bd3#
- 1...Sf3
- 2.Bd3#
- 1...Sb5
- 2.Bd3#
- 1...Sf5
- 2.Bd3#
- 1...Sc6
- 2.Bd3#
- 1...Se6
- 2.Bd3#
- 1...Rg4
- Tries
- 1.Sd3?
- threat
- 2.S3c5#
- 2.S7c5#
- 1...Bxd3+
- 2.Bxd3#
- 1...Rf3
- 2.S3c5#
- 1...Bg3
- 2.S3c5#
- 1...Sf3
- 2.Sxf2#
- 2.S3c5#
- 1...Se6
- 2.Qxe6#
- 1...Rg4!
- threat
- 1.Sxc4?
- threat
- 2.Sd2#
- 2.Sd6#
- 2.Sc5#
- 2.Bd3#
- 1...Bxe3
- 2.Sd6#
- 2.Sc5#
- 2.Bd3#
- 2.Rxe3#
- 1...Sxe2
- 2.Sd2#
- 2.Sd6#
- 2.Sc5#
- 1...Rg4
- 2.Sd6#
- 2.Bd3#
- 2.Qxg4#
- 1...Rf6
- 2.Sd2#
- 2.Sc5#
- 2.Sxf6#
- 2.Bd3#
- 1...Be1
- 2.Sd6#
- 2.Sc5#
- 2.Bd3#
- 1...Bg3
- 2.Sd2#
- 2.Sd6#
- 2.Sc5#
- 1...Se6
- 2.Sd2#
- 2.Sd6#
- 2.Bd3#
- 2.Qxe6#
- 1...dxc4!
- threat
- 1.Sc6?
- threat
- 2.Sc5#
- 1...Bd3+
- 2.Bxd3#
- 1...Sxc6
- 2.Bd3#
- 1...Rg4
- 2.Qxg4#
- 1...Se6
- 2.Bd3#
- 2.Qxe6#
- 1...bxc6!
- threat
- 1.Sg6?
- threat
- 2.Sc5#
- 1...Bd3+
- 2.Bxd3#
- 1...Rg4
- 2.Qxg4#
- 1...Se6
- 2.Bd3#
- 2.Qxe6#
- 1...hxg6!
- threat
- 1.Sf7?
- threat
- 2.Sc5#
- 2.Sg5#
- 2.Sd6#
- 1...Bd3+
- 2.Bxd3#
- 1...Rg4
- 2.Sd6#
- 2.Qxg4#
- 1...Rf5
- 2.Sc5#
- 2.Sd6#
- 1...Rf6
- 2.Sc5#
- 2.Sxf6#
- 2.Sg5#
- 1...Bh4
- 2.Sc5#
- 2.Sd6#
- 1...Sf3
- 2.Sc5#
- 2.Sd6#
- 2.Bd3#
- 1...Sb5
- 2.Sc5#
- 2.Sg5#
- 2.Bd3#
- 2.Qe6#
- 1...Sf5
- 2.Sc5#
- 2.Sf6#
- 2.Sg5#
- 2.Bd3#
- 1...Se6
- 2.Sd6#
- 2.Bd3#
- 2.Qxe6#
- 1...h6
- 2.Sc5#
- 2.Sd6#
- 1...Rxf7!
- threat
- 1.Bc7?
- threat
- 2.Sc5#
- 1...Bd3+
- 2.Bxd3#
- 1...Rg4
- 2.Qxg4#
- 1...Se6
- 2.Bd3#
- 1...b6!
- threat
- 1.Raxc4?
- threat
- 2.Bd3#
- 2.Rxd4#
- 1...Bxe3
- 2.Bd3#
- 2.Rxe3#
- 1...Rg4
- 2.Bd3#
- 2.Qxg4#
- 2.Qf3#
- 1...Rf3
- 2.Bxf3#
- 2.Rxd4#
- 2.Qxf3#
- 1...Bg3
- 2.Rxd4#
- 1...dxc4!
- threat
- 1.Qxh7+?
- 1...Sf5
- 2.Bd3#
- 1...Rf5!
- 1...Sf5
- 1.Sd3?
- Keys
- 1.Qe6!
- threat
- 2.Sc5#
- 1...Bd3+
- 2.Sxd3#
- 1...Sxe6
- 2.Bd3#
- threat
- 1.Qe6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 10
- Sets
- R(f);OGATEB::QAR2(E),XR(f)
- B(a);OGATE,XP(D)::R1(C),XB(a)
- B(c);OGATE,P_SPINS(d),XB(B)::R1(F),XS(d)
- B(c);CHECK,N_GUARD,P_SPINS(d)::B(B),XB(c)
- B(c);OGATE,P_SPINS(d)::R1(F),XS(d)
- S(d);P_SPINB(c)::B(B)
- Tries
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- B(c);CHECK,OGATE,P_SPINS(d),XS(G)::B(B),XB(c)
- R(f);::S(G)
- B(a);::S(G)
- S(d);N_GUARD,P_SPINB(c)::QAR2(E),XS(d)
- Refutation
- R(f);
- Try
- S(G);XB(c)
- Threat
- DUALS(4)
- Refutation
- P(g);XS(G)
- Try
- S(G);
- Threat
- S(I)
- Vars
- B(c);CHECK,N_GUARD,P_SPINS(d)::B(B),XB(c)
- S(d);P_SPINB(c),XS(G)::B(B)
- R(f);OGATEB::QAR2(E),XR(f)
- Refutation
- P(h);XS(G)
- Try
- S(G);
- Threat
- S(I)
- Vars
- B(c);CHECK,N_GUARD,P_SPINS(d)::B(B),XB(c)
- R(f);OGATEB::QAR2(E),XR(f)
- Refutation
- P(i);XS(G)
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- B(c);CHECK,N_GUARD,P_SPINS(d)::B(B),XB(c)
- Refutation
- R(f);XS(G)
- Try
- B(H);
- Threat
- S(I)
- Vars
- B(c);CHECK,N_GUARD,P_SPINS(d)::B(B),XB(c)
- R(f);OGATEB::QAR2(E),XR(f)
- S(d);P_SPINB(c)::B(B)
- Refutation
- P(h);
- Try
- R(F);P_PINS(d),XB(c)
- Threat
- DUALS(2)
- Vars
- B(a);::R1(F),XS(d)
- Refutation
- P(g);N_SPINS(d),XR(F)
- Try
- Q(E);CHECK,XP(i)
- Vars
- S(d);P_SPINB(c),P_SPINS(d)::B(B)
- Refutation
- R(f);P_SPINR(f)
- Try
- Actual
- Q(E);
- Threat
- S(I)
- Vars
- B(c);CHECK,P_SPINS(d)::QAR(E)+S(G),XB(c)
- S(d);P_SPINB(c),XQ(E)::B(B)
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