MESON Chess Problem Database

Problem Display
PID: 169225 (1R1Q4/K7/8/1pk5/8/8/1N6/8 w - - 0 1)

Poisson, Christian

Sp. Comm. (miniature), SuperProblem-10 JT, 2016

1R1Q4/K7/8/1pk5/8/8/1N6/8

#2

4 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Rc8#
  • Tries
    • 1.Ka6?
      • 1...Kc6
        • 2.Rc8#
      • 1...b4
        • 2.Rc8#
      • 1...Kb4!
    • 1.Sd3+?
      • 1...Kc6
        • 2.Rb6#
        • 2.Rc8#
      • 1...Kc4!
    • 1.Rxb5+?
      • 1...Kxb5
        • 2.Qb6#
      • 1...Kc6!
    • 1.Qd2?
      • threat
        • 2.Rc8#
      • 1...Kc6
        • 2.Rc8#
      • 1...b4!
    • 1.Qd4+?
      • 1...Kc6
        • 2.Rc8#
      • 1...Kxd4!
    • 1.Qd7?
      • threat
        • 2.Rxb5#
      • 1...b4
        • 2.Rb5#
        • 2.Rc8#
      • 1...Kb4!
  • Keys
    • 1.Qd3!
      • 1...Kb4
        • 2.Rxb5#
      • 1...Kc6
        • 2.Rc8#
      • 1...b4
        • 2.Rc8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::R(C)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(b);P-FLIGHT::R(C)
        • P(a);SBLOCK::R(C)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
    • Try
      • S(A);CHECK
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(C);CHECK,XP(a)
      • Vars
        • K(b);P-FLIGHT,XR(C)::QAR1(D)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(D);
      • Threat
        • R(C)
      • Vars
        • K(b);P-FLIGHT::R(C)
      • Refutation
        • P(a);
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);P-FLIGHT::R(C)
      • Refutation
        • K(b);S_FLIGHT,XQ(D)
    • Try
      • Q(D);
      • Threat
        • R1(C),XP(a)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::R1(C),XP(a)
      • K(b);P-FLIGHT::R(C)
      • P(a);SBLOCK::R(C)
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