MESON Chess Problem Database

Problem Display
PID: 55534 (4B2K/1P2p3/Qp1PkP2/1P6/2P2PP1/4N3/8/7R w - - 0 1)

Kovalenko, Vitaly Semenovich

Probleemblad, 2004

4B2K/1P2p3/Qp1PkP2/1P6/2P2PP1/4N3/8/7R

#2

12 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd6
      • 2.Qxb6#
    • 1...Kxf6
      • 2.Rh6#
  • Tries
    • 1.Sd5?
      • 1...Kxd6
        • 2.Qxb6#
      • 1...exd6
        • 2.Re1#
      • 1...exf6!
    • 1.Sf5?
      • 1...Kxf6
        • 2.Rh6#
      • 1...exf6
        • 2.Re1#
      • 1...exd6!
    • 1.Qa1?
      • threat
        • 2.Qe5#
      • 1...Kxd6
        • 2.Qe5#
      • 1...exd6
        • 2.f5#
      • 1...exf6!
    • 1.c5?
      • 1...Kxf6
        • 2.Rh6#
      • 1...bxc5
        • 2.dxe7#
        • 2.d7#
      • 1...exf6
        • 2.Qa2#
      • 1...exd6!
    • 1.dxe7?
      • threat
        • 2.Qxb6#
      • 1...Kd6
        • 2.Qxb6#
      • 1...Kxf6!
    • 1.d7?
      • threat
        • 2.Qxb6#
      • 1...Kd6
        • 2.Qxb6#
      • 1...Kxf6
        • 2.Rh6#
      • 1...exf6!
    • 1.fxe7?
      • threat
        • 2.Rh6#
      • 1...Kf6
        • 2.Rh6#
      • 1...Kxd6!
    • 1.f7?
      • threat
        • 2.Rh6#
      • 1...Kxd6
        • 2.Qxb6#
      • 1...Kf6
        • 2.Rh6#
      • 1...exd6!
    • 1.b8Q?
      • 1...Kxf6
        • 2.Rh6#
      • 1...exf6
        • 2.Qac8#
      • 1...exd6!
    • 1.b8B?
      • 1...Kxf6
        • 2.Rh6#
      • 1...exf6
        • 2.Qc8#
      • 1...exd6!
  • Keys
    • 1.Re1!
      • 1...Kxd6
        • 2.Qxb6#
      • 1...Kxf6
        • 2.Sd5#
      • 1...exd6
        • 2.Sd5#
      • 1...exf6
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,P-FLIGHT,P_SPINP(a),XP(H)::QAR2(G),XP(a)
    • K(b);OGATEB,P-FLIGHT,XP(I)::R(A)
  • Tries
    • Try
      • S(B);
      • Vars
        • K(b);OGATEB,P-FLIGHT,P_SPINP(a),XP(H)::QAR2(G),XP(a)
        • P(c);SBLOCK,XP(H)::R(A)
      • Refutation
        • P(c);XP(I)
    • Try
      • S(B);
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(I)::R(A)
        • P(c);SBLOCK,XP(I)::R(A)
      • Refutation
        • P(c);XP(H)
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • K(b);P-FLIGHT,XP(H)::QAB1(G)
        • P(c);SBLOCK,XP(H)::P(D)
      • Refutation
        • P(c);XP(I)
    • Try
      • P(C);
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(I)::R(A)
        • P(c);SBLOCK,XP(I)::QAB(G)
      • Refutation
        • P(c);XP(H)
    • Try
      • P(H);P_PINP(a),XP(c)
      • Threat
        • QAR(G),XP(a)
      • Vars
        • K(b);P-FLIGHT::QAR2(G),XP(a)
      • Refutation
        • K(b);P-FLIGHT,XP(I)
    • Try
      • P(H);P_PINP(a)
      • Threat
        • QAR(G),XP(a)
      • Vars
        • K(b);P-FLIGHT::QAR2(G),XP(a)
        • K(b);OGATEB,P-FLIGHT,XP(I)::R(A)
      • Refutation
        • P(c);XP(I)
    • Try
      • P(I);XP(c)
      • Threat
        • R(A)
      • Vars
        • K(b);P-FLIGHT::R(A)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(a),XP(H)
    • Try
      • P(I);
      • Threat
        • R(A)
      • Vars
        • K(b);OGATEB,P-FLIGHT,P_SPINP(a),XP(H)::QAR2(G),XP(a)
        • K(b);P-FLIGHT::R(A)
      • Refutation
        • P(c);XP(H)
    • Try
      • P(J);
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(I)::R(A)
        • P(c);SBLOCK,XP(I)::QAB(G)
      • Refutation
        • P(c);XP(H)
    • Try
      • P(J);
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(I)::R(A)
        • P(c);SBLOCK,XP(I)::QAB(G)
      • Refutation
        • P(c);XP(H)
  • Actual
    • R(A);
    • Vars
      • K(b);OGATEB,P-FLIGHT,P_SPINP(a),XP(H)::QAR2(G),XP(a)
      • K(b);P-FLIGHT,XP(I)::S(B)
      • P(c);SBLOCK,XP(H)::R(A)+S(B)
      • P(c);SBLOCK,XP(I)::R(A)+S(B)
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