MESON Chess Problem Database

Problem Display
PID: 107808 (6B1/8/2rp2QK/1PP1P3/1RNk1N1R/4p3/8/8 w - - 0 1)

Braithwaite, Kenneth Holmes

Le Droit, 1979

6B1/8/2rp2QK/1PP1P3/1RNk1N1R/4p3/8/8

#2

10 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Sd5#
    • 1...Kxc5
      • 2.Sd3#
    • 1...Rxc5
      • 2.Se2#
      • 2.Sd5#
      • 2.Qd3#
    • 1...dxc5
      • 2.Se2#
      • 2.Sd5#
  • Tries
    • 1.Se6+?
      • 1...Kd5
        • 2.Rd4#
        • 2.Qd3#
        • 2.Qe4#
        • 2.Qg2#
      • 1...Kc3!
    • 1.Rb3?
      • threat
        • 2.Sd3#
      • 1...Kxc5
        • 2.Sd3#
      • 1...dxe5!
    • 1.Qe4+?
      • 1...Kc3
        • 2.Sd5#
      • 1...Kxc5
        • 2.Sd3#
      • 1...Kxe4!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Sd3#
      • 1...dxc5+
        • 2.Sg6#
      • 1...dxe5+
        • 2.Sd6#
      • 1...d5+
        • 2.Se6#
      • 1...Kxc5
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(b);S_FLIGHT::S(C)
    • K(b);S_FLIGHT,XP(F)::S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(A);
      • Threat
        • R(D)+S(C)
      • Vars
        • K(b);S_FLIGHT,XP(F)::S(C)
      • Refutation
        • P(d);P_PINQ(H),XP(G)
    • Try
      • Q(H);CHECK
      • Vars
        • K(b);S_FLIGHT::S(C)
        • K(b);S_FLIGHT,XP(F)::S(C)
      • Refutation
        • K(b);P-FLIGHT,XQ(H)
  • Actual
    • Q(H);
    • Threat
      • R(D)+S(C)
    • Vars
      • P(d);CHECK,SBLOCK,XP(F)::R(D)+S(C)
      • P(d);CHECK,SBLOCK,XP(G)::R(A)+S(B)
      • P(d);CHECK,SBLOCK::R(D)+S(C),DCHECK
      • K(b);S_FLIGHT,XP(F)::S(C)
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