MESON Chess Problem Database

Problem Display
PID: 267096 (8/2p5/2R1R3/2pkp3/3P4/1p4p1/1B4K1/2QN4 w - - 0 1)

Rice, John Michael

The Problemist, 1955

8/2p5/2R1R3/2pkp3/3P4/1p4p1/1B4K1/2QN4

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...exd4
      • 2.Qxc5#
    • 1...e4
      • 2.Se3#
      • 2.Qxc5#
  • Tries
    • 1.Kf3?
      • threat
        • 2.Se3#
        • 2.Qxc5#
      • 1...cxd4
        • 2.Qc4#
        • 2.Qc5#
      • 1...exd4
        • 2.Qxc5#
      • 1...c4
        • 2.Se3#
        • 2.Qxc4#
      • 1...e4+!
    • 1.Sf2?
      • threat
        • 2.Qxc5#
      • 1...cxd4
        • 2.Qc4#
        • 2.Qc5#
      • 1...c4
        • 2.Qxc4#
      • 1...gxf2!
    • 1.dxc5?
      • 1...e4
        • 2.Se3#
      • 1...Ke4!
    • 1.dxe5?
      • 1...c4
        • 2.Qxc4#
      • 1...Ke4!
  • Keys
    • 1.Qd2!
      • 1...Kc4
        • 2.Rxc5#
      • 1...Ke4
        • 2.Rxe5#
      • 1...cxd4
        • 2.Sc3#
      • 1...exd4
        • 2.Se3#
      • 1...c4
        • 2.Sc3#
      • 1...e4
        • 2.Se3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(e);XP(E)::QAR1(A),XP(c)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • P(e);XP(E)::QAR1(A),XP(c)
      • Refutation
        • P(e);CHECK
    • Try
      • S(B);
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • P(c);::QAB1(A),XP(c)
      • Refutation
        • P(b);XS(B)
    • Try
      • P(E);XP(c)
      • Vars
        • P(e);::S(B)
      • Refutation
        • K(d);P_SPINP(e),S_FLIGHT
    • Try
      • P(E);XP(e)
      • Vars
        • P(c);::QAB1(A),XP(c)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(d);N_GUARD,P_SPINP(c),S_FLIGHT::R1(F),XP(c)
      • K(d);N_GUARD,P_SPINP(e),S_FLIGHT::R1(G),XP(e)
      • P(c);P_SPINP(c),XP(E)::S(B)
      • P(e);P_SPINP(e),XP(E)::S(B)
      • P(c);::S(B)
      • P(e);::S(B)
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