MESON Chess Problem Database
Problem Display
PID: 141642 (2N5/b1nK4/2R1r3/3kPP2/1PpP1rQ1/5P2/q1P1N3/4R3 w - - 0 1)
Dyachuk, Vasyl Vasilovich
2nd Prize, Melnichenko MT (Odessa TT), 2009
#2
12 + 7
| 56 | The Problemist | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Rxf3
- 2.Qxf3#
- 1...Rxd4
- 2.Sc3#
- 1...Re4
- 2.Qxe4#
- 2.fxe4#
- 1...Rxf5
- 2.Sc3#
- 2.Qe4#
- 1...Rxe5
- 2.Rd6#
- 1...Rxc6
- 2.Se7#
- 1...Rd6+
- 2.Rxd6#
- 1...Rf6
- 2.Se7#
- 1...Rg6
- 2.Se7#
- 1...Rh6
- 2.Se7#
- 1...Re7+
- 2.Sxe7#
- 1...Re8
- 2.Rd6#
- 1...Bxd4
- 2.Sxf4#
- 1...Bc5
- 2.Rxc5#
- 1...Bb6
- 2.Sxb6#
- 1...Bb8
- 2.Sb6#
- 2.Rc5#
- 1...Rxf3
- Tries
- 1.Qg1?
- threat
- 2.Sc3#
- 2.Sxf4#
- 1...Rd6+
- 2.Rxd6#
- 1...Re7+
- 2.Sxe7#
- 1...Qxc2
- 2.Sxf4#
- 1...Rxd4
- 2.Sc3#
- 1...Rxf5
- 2.Sc3#
- 1...Bxd4
- 2.Sxf4#
- 1...Qb3
- 2.Sxf4#
- 1...Qa1
- 2.Sxf4#
- 1...Qb2
- 2.Sxf4#
- 1...Qa3
- 2.Sxf4#
- 1...Re4
- 2.Sc3#
- 1...Rg4
- 2.Sc3#
- 1...Rh4
- 2.Sc3#
- 1...Sb5
- 2.Sxf4#
- 1...c3
- 2.Sxc3#
- 2.Sxf4#
- 1...Rxf3!
- threat
- 1.Qxf4?
- threat
- 2.Sc3#
- 2.Qe4#
- 1...Rd6+
- 2.Rxd6#
- 1...Re7+
- 2.Sxe7#
- 1...Rxe5
- 2.Sc3#
- 2.Rd6#
- 2.Qxe5#
- 1...Bxd4
- 2.Qxd4#
- 2.Qe4#
- 1...Qb3
- 2.Qe4#
- 1...Qa1
- 2.Qe4#
- 1...Qb2
- 2.Qe4#
- 1...Qa3
- 2.Qe4#
- 1...Sb5
- 2.Qe4#
- 1...c3
- 2.Sxc3#
- 2.Qe4#
- 1...Qxc2!
- threat
- 1.Qg8?
- threat
- 2.Se7#
- 2.Rd6#
- 1...Rxd4
- 2.Sc3#
- 1...Bxd4
- 2.Sxf4#
- 1...Qa4
- 2.Se7#
- 1...Qa6
- 2.Se7#
- 1...Bc5
- 2.Rxc5#
- 1...Sb5
- 2.Se7#
- 2.Qxe6#
- 1...Se8
- 2.Se7#
- 2.Qxe6#
- 1...c3
- 2.Se7#
- 1...Rxf3!
- threat
- 1.fxe6?
- threat
- 2.Se7#
- 2.Rd6#
- 1...Rxd4
- 2.Sc3#
- 1...Bxd4
- 2.Sxf4#
- 1...Qa4
- 2.Se7#
- 1...Qa6
- 2.Se7#
- 1...Bc5
- 2.Rxc5#
- 1...Sb5
- 2.Se7#
- 1...Se8
- 2.Se7#
- 1...c3
- 2.Se7#
- 1...Rf7+!
- threat
- 1.Qg1?
- Keys
- 1.Rd1!
- threat
- 2.Sc3#
- 2.Sxf4#
- 1...Rd6+
- 2.Rxd6#
- 1...Re7+
- 2.Sxe7#
- 1...Qxc2
- 2.Sxf4#
- 1...Rxf3
- 2.Qxf3#
- 1...Rxd4
- 2.Qe4#
- 1...Rxg4
- 2.Sc3#
- 1...Rxf5
- 2.Sc3#
- 2.Qe4#
- 1...Bxd4
- 2.Rc5#
- 1...Qb3
- 2.Sxf4#
- 1...Qa1
- 2.Sxf4#
- 1...Qb2
- 2.Sxf4#
- 1...Qa3
- 2.Sxf4#
- 1...Re4
- 2.Sc3#
- 2.Qxe4#
- 2.fxe4#
- 1...Sb5
- 2.Sxf4#
- 1...c3
- 2.Sxc3#
- 2.Sxf4#
- threat
- 1.Rd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 7
- REMOVED MATES = 8
- Sets
- R(c);OGATE,XP(D)::QAB(G),XR(c)
- R(c);XP(F)::S(C)
- R(e);N_GUARD,XP(H)::R1(J)
- R(e);N_GUARD,XR(J)::S(L)
- R(e);CHECK,N_GUARD::R1(J),XR(e)
- R(e);N_GUARD::S(L)
- R(e);CHECK,N_GUARD::S(L),XR(e)
- R(e);N_GUARD::R1(J)
- B(f);SBLOCK,XP(F)::S(C),XR(c)
- B(f);N_GUARD::R1(J),XB(f)
- B(f);N_GUARD::S(L),XB(f)
- Tries
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(e);CHECK,N_GUARD::R1(J),XR(e)
- R(e);CHECK,N_GUARD::S(L),XR(e)
- Q(a);XP(B)::S(C),XR(c)
- R(c);XP(F)::S(C)
- R(c);XP(I)::S(C)
- B(f);XP(F)::S(C),XR(c)
- Q(a);::S(C),XR(c)
- R(c);::S(C)
- S(g);::S(C),XR(c)
- Refutation
- R(c);XP(D)
- Try
- Q(G);XR(c)
- Threat
- DUALS(2)
- Vars
- R(e);CHECK,N_GUARD::R1(J),XR(e)
- R(e);CHECK,N_GUARD::S(L),XR(e)
- Q(a);::QAB1(G)
- S(g);::QAB1(G)
- Refutation
- Q(a);XP(B)
- Try
- Q(G);P_PINR(e)
- Threat
- DUALS(2)
- Vars
- R(c);SBLOCK,XP(F)::S(C)
- B(f);SBLOCK,XP(F)::S(C),XR(c)
- Q(a);P_PINR(J)::S(L)
- Q(a);::S(L)
- B(f);N_GUARD::R1(J),XB(f)
- P(b);::S(L)
- Refutation
- R(c);XP(D)
- Try
- P(I);XR(e)
- Threat
- DUALS(2)
- Vars
- R(c);XP(F)::S(C)
- B(f);SBLOCK,XP(F)::S(C),XR(c)
- Q(a);P_PINR(J)::S(L)
- Q(a);::S(L)
- B(f);N_GUARD::R1(J),XB(f)
- S(g);::S(L)
- P(b);::S(L)
- Refutation
- R(c);CHECK
- Try
- Actual
- R(A);
- Threat
- DUALS(2)
- Vars
- R(e);CHECK,N_GUARD::R1(J),XR(e)
- R(e);CHECK,N_GUARD::S(L),XR(e)
- Q(a);XP(B)::S(C),XR(c)
- R(c);OGATE,XP(D)::QAB(G),XR(c)
- R(c);OGATE,P_SPINR(c),XP(F)::QAB1(G)
- R(c);XQ(G)::S(C)
- B(f);N_GUARD,P_SPINB(f),XP(F)::R1(J)
- Q(a);::S(C),XR(c)
- S(g);::S(C),XR(c)
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