MESON Chess Problem Database
Problem Display
PID: 16243 (BB1nN3/2R5/1Nq1pP2/4kP2/2QpP1nR/1p1b2P1/1K6/8 w - - 0 1)
Dyachuk, Vasyl Vasilovich
The Problemist, 2000
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Qa4
- 2.Rc5#
- 2.Ra7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rch7#
- 2.Rc8#
- 2.Qc5#
- 1...Qxe4
- 2.Rc5#
- 1...Qb5
- 2.Rc5#
- 2.Ra7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rch7#
- 2.Rc8#
- 1...Qd7
- 2.Sxd7#
- 2.Rc5#
- 2.Rxd7#
- 1...Qxe8
- 2.Rf7#
- 1...Qxc4
- 2.Sd7#
- 2.Rxc4#
- 2.Rc5#
- 1...Qc5
- 2.Sd7#
- 2.Rxc5#
- 2.Qxc5#
- 1...Qxb6
- 2.Rc5#
- 1...Qd6
- 2.Rc5#
- 1...Qxc7
- 2.Sd7#
- 2.Bxc7#
- 2.Qc5#
- 2.Qxc7#
- 1...Sf2
- 2.Rxc6#
- 1...Sh2
- 2.Rxc6#
- 1...Se3
- 2.Rxc6#
- 1...Sxf6
- 2.Rxc6#
- 1...Sh6
- 2.Rxc6#
- 1...exf5
- 2.Re7#
- 1...Qa4
- Tries
- 1.Sd7+?
- 1...Qxd7
- 2.Rc5#
- 2.Rxd7#
- 1...Kxe4!
- 1...Qxd7
- 1.Bxc6?
- threat
- 2.Sd7#
- 2.Ra7#
- 2.Rb7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rch7#
- 2.Rc8#
- 2.Qc5#
- 1...Bxc4
- 2.Sxc4#
- 2.Sd7#
- 2.Ra7#
- 2.Rb7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rch7#
- 2.Rc8#
- 1...Sxf6
- 2.Ra7#
- 2.Rb7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rch7#
- 2.Rc8#
- 1...Sxc6
- 2.Qxe6#
- 1...exf5
- 2.Sd7#
- 2.Ra7#
- 2.Rb7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rch7#
- 2.Rc8#
- 2.Qd5#
- 1...Se3
- 2.Sd7#
- 2.Ra7#
- 2.Rb7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rch7#
- 2.Rc8#
- 1...Sb7
- 2.Sd7#
- 2.Rxb7#
- 2.Qxe6#
- 1...Sf7
- 2.Sd7#
- 2.Rxf7#
- 2.Qxe6#
- 2.Qc5#
- 1...Bxe4!
- threat
- 1.Ra7+?
- 1...Qd6
- 2.Sd7#
- 2.Bxd6#
- 2.Ra5#
- 2.Qc5#
- 1...Qc7
- 2.Sd7#
- 2.Bxc7#
- 2.Ra5#
- 2.Qc5#
- 2.Qxc7#
- 1...Kxe4!
- 1...Qd6
- 1.Rd7+?
- 1...Qd6
- 2.Bxd6#
- 2.Qc5#
- 1...Qc7
- 2.Bxc7#
- 2.Qxd4#
- 2.Qc5#
- 2.Qxc7#
- 1...Kxe4!
- 1...Qd6
- 1.Re7+?
- 1...Qd6
- 2.Sd7#
- 2.Bxd6#
- 2.Qd5#
- 2.Qc5#
- 1...Qc7
- 2.Sd7#
- 2.Bxc7#
- 2.Qd5#
- 2.Qc5#
- 2.Qxc7#
- 1...Kxe4!
- 1...Qd6
- 1.Rf7+?
- 1...Qd6
- 2.Sd7#
- 2.Bxd6#
- 2.Qc5#
- 1...Qc7
- 2.Sd7#
- 2.Bxc7#
- 2.Qc5#
- 2.Qxc7#
- 1...Kxe4!
- 1...Qd6
- 1.Rg7+?
- 1...Qd6
- 2.Sd7#
- 2.Bxd6#
- 2.Qc5#
- 1...Qc7
- 2.Sd7#
- 2.Bxc7#
- 2.Qc5#
- 2.Qxc7#
- 1...Kxe4!
- 1...Qd6
- 1.Rch7+?
- 1...Qd6
- 2.Sd7#
- 2.Bxd6#
- 2.Qc5#
- 1...Qc7
- 2.Sd7#
- 2.Bxc7#
- 2.Qc5#
- 2.Qxc7#
- 1...Kxe4!
- 1...Qd6
- 1.Rc8+?
- 1...Qd6
- 2.Sd7#
- 2.Bxd6#
- 2.Rc5#
- 2.Qc5#
- 1...Qc7
- 2.Sd7#
- 2.Bxc7#
- 2.Qc5#
- 2.Qxc7#
- 1...Kxe4!
- 1...Qd6
- 1.Qd5+?
- 1...exd5
- 2.Re7#
- 1...Qxd5!
- 1...exd5
- 1.Qxe6+?
- 1...Qxe6
- 2.Rc5#
- 2.Re7#
- 1...Sxe6!
- 1...Qxe6
- 1.Qxc6?
- threat
- 2.Sd7#
- 2.Ra7#
- 2.Rb7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rch7#
- 2.Rc8#
- 2.Qc5#
- 2.Qd6#
- 1...Bxe4
- 2.Qxe4#
- 1...Sxf6
- 2.Ra7#
- 2.Rb7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rch7#
- 2.Rc8#
- 2.Qd6#
- 1...exf5
- 2.Sd7#
- 2.Ra7#
- 2.Rb7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rch7#
- 2.Rc8#
- 2.Qd5#
- 2.Qd6#
- 1...Sb7
- 2.Sd7#
- 2.Rxb7#
- 2.Qxe6#
- 1...Bc4
- 2.Sxc4#
- 2.Sd7#
- 2.Ra7#
- 2.Rb7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rch7#
- 2.Rc8#
- 2.Qd6#
- 1...Se3
- 2.Sd7#
- 2.Ra7#
- 2.Rb7#
- 2.Rd7#
- 2.Re7#
- 2.Rf7#
- 2.Rg7#
- 2.Rch7#
- 2.Rc8#
- 2.Qd6#
- 1...Sf7
- 2.Sd7#
- 2.Rxf7#
- 2.Qc5#
- 2.Qxe6#
- 1...Sxc6!
- threat
- 1.Sd7+?
- Keys
- 1.Qc1!
- threat
- 2.Qf4#
- 1...Qxc1+
- 2.Rxc1#
- 1...Qc2+
- 2.Rxc2#
- 1...Qc3+
- 2.Rxc3#
- 1...Kxe4
- 2.Qf4#
- 1...Qxe4
- 2.Rc5#
- 1...Qxe8
- 2.Rf7#
- 1...exf5
- 2.Re7#
- 1...Se3
- 2.Rxc6#
- threat
- 1.Qc1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 6
- Sets
- Q(f);OGATE,XP(D)::B(K)+R(I),DCHECK
- Q(f);N_GUARD,XS(L)::B(K)+R(I)
- Q(f);OGATE,XS(G)::B(K)+R(I),DCHECK
- Q(f);OGATE::R(I)
- S(d);::B(K)+R(I),XQ(f)
- S(d);XP(H)::B(K)+R(I),XQ(f)
- P(g);XP(F)::B(K)+R(I),DCHECK
- Tries
- Try
- S(G);CHECK
- Refutation
- K(e);P-FLIGHT,P_SPINP(c),P_SPINQ(f),P_SPINS(d),XP(D)
- Try
- B(J);XQ(f)
- Threat
- DUALS(10)
- Vars
- S(h);N_GUARD,XB(J)::QAR1(C),XP(g)
- Refutation
- B(b);XP(D)
- Try
- R(I);CHECK
- Refutation
- K(e);P-FLIGHT,P_SPINP(c),P_SPINQ(f),P_SPINS(d),XP(D)
- Try
- R(I);CHECK
- Refutation
- K(e);P-FLIGHT,P_SPINP(c),P_SPINQ(f),P_SPINS(d),XP(D)
- Try
- R(I);CHECK,P_PINP(g)
- Refutation
- K(e);N_SPINP(g),P-FLIGHT,P_SPINP(c),P_SPINQ(f),P_SPINS(d),XP(D)
- Try
- R(I);CHECK
- Refutation
- K(e);P-FLIGHT,P_SPINP(c),P_SPINQ(f),P_SPINS(d),XP(D)
- Try
- R(I);CHECK
- Refutation
- K(e);P-FLIGHT,P_SPINP(c),P_SPINQ(f),P_SPINS(d),XP(D)
- Try
- R(I);CHECK
- Refutation
- K(e);P-FLIGHT,P_SPINP(c),P_SPINQ(f),P_SPINS(d),XP(D)
- Try
- R(I);CHECK
- Refutation
- K(e);P-FLIGHT,P_SPINP(c),P_SPINQ(f),P_SPINS(d),XP(D)
- Try
- Q(C);CHECK
- Vars
- P(g);XQ(C)::B(K)+R(I),DCHECK
- Refutation
- Q(f);XQ(C)
- Try
- Q(C);CHECK,XP(g)
- Refutation
- S(h);XQ(C)
- Try
- Q(C);XQ(f)
- Threat
- DUALS(11)
- Vars
- B(b);OGATE,XP(D)::QAR1(C),XB(b)
- Refutation
- S(h);XQ(C)
- Try
- Actual
- Q(C);
- Threat
- QAB1(C)
- Vars
- Q(f);CHECK,OGATE,XQ(C)::B(K)+R(I),XQ(f)
- Q(f);CHECK,OGATE::B(K)+R(I),XQ(f)
- K(e);P-FLIGHT,P_SPINQ(f),P_SPINS(d),XP(D)::QAR1(C)
- Q(f);OGATE,XP(D)::B(K)+R(I),DCHECK
- Q(f);N_GUARD,XS(L)::B(K)+R(I)
- P(g);XP(F)::B(K)+R(I),DCHECK
- S(d);::B(K)+R(I),XQ(f)
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