MESON Chess Problem Database

Problem Display
PID: 47655 (8/8/8/2p5/2k1qR2/1R2Q3/4K3/8 w - - 0 1)

Chepizhni, Viktor Ivanovich

6th Comm., Springaren, 1991

8/8/8/2p5/2k1qR2/1R2Q3/4K3/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Qe6#
    • 1...Qxf4
      • 2.Qd3#
  • Tries
    • 1.Ke1?
      • 1...Qxf4
        • 2.Qd3#
      • 1...Qd4
        • 2.Qe6#
      • 1...Kd5!
    • 1.Rb1?
      • 1...Qxf4
        • 2.Qd3#
      • 1...Qd4
        • 2.Qb3#
      • 1...Kd5!
    • 1.Rb2?
      • 1...Qxf4
        • 2.Qd3#
      • 1...Qd4
        • 2.Qb3#
      • 1...Kd5!
    • 1.Rb7?
      • 1...Qxf4
        • 2.Qd3#
      • 1...Qd4
        • 2.Qb3#
      • 1...Kd5!
    • 1.Rb8?
      • 1...Qxf4
        • 2.Qd3#
      • 1...Qd4
        • 2.Qb3#
      • 1...Kd5!
  • Keys
    • 1.Rb6!
      • 1...Kd5
        • 2.Qxe4#
      • 1...Qxf4
        • 2.Qd3#
      • 1...Qd4
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_PINQ(C)::QAB(C)
    • Q(b);N_PINQ(C),N_SPINQ(b),XR(D)::QAB1(C)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • Q(b);N_PINQ(C),N_SPINQ(b),XR(D)::QAB1(C)
        • Q(b);N_PINQ(C)::QAB(C)
      • Refutation
        • K(a);N_SPINQ(b),S_FLIGHT
    • Try
      • R(B);
      • Vars
        • Q(b);N_PINQ(C),N_SPINQ(b),XR(D)::QAB1(C)
        • Q(b);N_PINQ(C)::QAB1(C)
      • Refutation
        • K(a);N_SPINQ(b),S_FLIGHT
    • Try
      • R(B);
      • Vars
        • Q(b);N_PINQ(C),N_SPINQ(b),XR(D)::QAB1(C)
        • Q(b);N_PINQ(C)::QAB1(C)
      • Refutation
        • K(a);N_SPINQ(b),S_FLIGHT
    • Try
      • R(B);
      • Vars
        • Q(b);N_PINQ(C),N_SPINQ(b),XR(D)::QAB1(C)
        • Q(b);N_PINQ(C)::QAB1(C)
      • Refutation
        • K(a);N_SPINQ(b),S_FLIGHT
    • Try
      • R(B);
      • Vars
        • Q(b);N_PINQ(C),N_SPINQ(b),XR(D)::QAB1(C)
        • Q(b);N_PINQ(C)::QAB1(C)
      • Refutation
        • K(a);N_SPINQ(b),S_FLIGHT
  • Actual
    • R(B);
    • Vars
      • K(a);N_SPINQ(b),S_FLIGHT::QAB1(C),XQ(b)
      • Q(b);N_PINQ(C),N_SPINQ(b),XR(D)::QAB1(C)
      • Q(b);N_PINQ(C)::QAB1(C)
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