MESON Chess Problem Database

Problem Display
PID: 10236 (6Q1/1N3p2/KB1p4/3kbRP1/8/P1p2N1B/2R1P3/8 w - - 0 1)

Reeves, Alfred Christopher

Correspondence Chess, 1963

6Q1/1N3p2/KB1p4/3kbRP1/8/P1p2N1B/2R1P3/8

#2

11 + 5

3174 The Two-move Chess Problem Tradition and Development 1966

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Rxe5#
      • 2.Qxf7#
  • Tries
    • 1.Kb5?
      • 1...Ke6
        • 2.Rxe5#
        • 2.Qxf7#
      • 1...Ke4!
    • 1.Sa5?
      • 1...Ke6
        • 2.Rxe5#
        • 2.Qxf7#
      • 1...Ke4!
    • 1.Rxc3?
      • 1...Ke6
        • 2.Rxe5#
        • 2.Qxf7#
      • 1...Ke4!
    • 1.Rxe5+?
      • 1...Kc4
        • 2.Sd2#
        • 2.Sa5#
      • 1...Kc6
        • 2.Sd4#
        • 2.Sa5#
        • 2.Sd8#
        • 2.Rxc3#
        • 2.Qc8#
        • 2.Qe8#
      • 1...dxe5!
    • 1.Qxf7+?
      • 1...Kc6
        • 2.Sa5#
        • 2.Sd8#
      • 1...Ke4!
    • 1.Qa8?
      • 1...Kc4
        • 2.Sa5#
      • 1...Ke4
        • 2.Sxd6#
      • 1...Kc6
        • 2.Sc5#
      • 1...Ke6
        • 2.Rxe5#
      • 1...f6!
  • Keys
    • 1.Bg2!
      • 1...Kc4
        • 2.Sd2#
      • 1...Ke4
        • 2.Sh4#
      • 1...Kc6
        • 2.Sxe5#
      • 1...Ke6
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(H);S_FLIGHT
      • Refutation
        • K(b);N_SPINB(c),N_SPINP(e),S_FLIGHT
    • Try
      • S(J);
      • Refutation
        • K(b);N_SPINB(c),N_SPINP(e),S_FLIGHT
    • Try
      • R(A);XP(a)
      • Refutation
        • K(b);N_SPINB(c),N_SPINP(e),S_FLIGHT
    • Try
      • R(F);CHECK,XB(c)
      • Refutation
        • P(d);XR(F)
    • Try
      • Q(K);CHECK,XP(e)
      • Refutation
        • K(b);N_SPINB(c),S_FLIGHT
    • Try
      • Q(K);N_PINP(e)
      • Vars
        • K(b);N_SPINB(c),P_SPINP(a),S_FLIGHT::S(J)
        • K(b);N_SPINB(c),S_FLIGHT::QAB(K)+S(J),DCHECK,XP(d)
        • K(b);N_SPINB(c),P_SPINP(a),S_FLIGHT::QAB(K)+S(J)
        • K(b);N_SPINB(c),S_FLIGHT::B(E)+R(F),DCHECK,XB(c)
      • Refutation
        • P(e);
  • Actual
    • B(E);
    • Vars
      • K(b);N_SPINB(c),N_SPINP(e),P_SPINP(a),S_FLIGHT::S(D)
      • K(b);N_SPINB(c),N_SPINP(e),S_FLIGHT::B(E)+S(D)
      • K(b);N_SPINB(c),N_SPINP(e),P_SPINP(a),S_FLIGHT::B(E)+S(D),DCHECK,XB(c)
      • K(b);N_SPINB(c),S_FLIGHT::QAB1(K),XP(e)
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