MESON Chess Problem Database

Problem Display
PID: 274234 (8/K7/8/2p5/k1b3B1/pR6/3Q4/8 w - - 0 1)

Goldschmeding, Cornelis

Probleemblad, 1953

8/K7/8/2p5/k1b3B1/pR6/3Q4/8

#2

4 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb3
      • 2.Bd1#
    • 1...Bxb3
      • 2.Bd7#
    • 1...a2
      • 2.Qxa2#
  • Tries
    • 1.Rxa3+?
      • 1...Kb5
        • 2.Bd7#
      • 1...Kxa3!
    • 1.Qa2?
      • threat
        • 2.Qxa3#
      • 1...Ka5
        • 2.Qxa3#
      • 1...Bxb3!
  • Keys
    • 1.Rb5!
      • threat
        • 2.Qa5#
      • 1...Kxb5
        • 2.Bd7#
      • 1...Bxb5
        • 2.Bd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • K(b);OGATEB,S_FLIGHT,XR(B)::B(C)
    • B(c);N_GUARD,SBLOCK,XR(B)::B(C)
    • P(a);OGATEB::QAR2(A),XP(a)
  • Tries
    • Try
      • R(B);CHECK,XP(a)
      • Vars
        • K(b);N_GUARD,S_FLIGHT::B(C)
      • Refutation
        • K(b);P-FLIGHT,XR(B)
    • Try
      • Q(A);P_PINP(a)
      • Threat
        • QAR1(A),XP(a)
      • Vars
        • K(b);P-FLIGHT::QAR2(A),XP(a)
      • Refutation
        • B(c);XR(B)
  • Actual
    • R(B);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XR(B)::B(C)
      • B(c);N_GUARD,SBLOCK,XR(B)::B(C)
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