MESON Chess Problem Database

Problem Display
PID: 205192 (2K5/2R1P1n1/4n1R1/pk1N4/3bQ3/Bb6/2N3q1/2r5 w - - 0 1)

Wrobel, Marian

American Chess Bulletin, 1951

2K5/2R1P1n1/4n1R1/pk1N4/3bQ3/Bb6/2N3q1/2r5

#2

8 + 8

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ka4
      • 2.Sc3#
    • 1...Ba4
      • 2.Qd3#
  • Tries
    • 1.Qd3+?
      • 1...Bc4
        • 2.Qxc4#
      • 1...Ka4!
  • Keys
    • 1.Rb7+!
      • 1...Ka4
        • 2.Sc3#
      • 1...Kc4
        • 2.Sce3#
      • 1...Ka6
        • 2.Sc7#
      • 1...Kc6
        • 2.Sxd4#
      • 1...Bb6
        • 2.Rxb6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(f);P_SPINB(d),S_FLIGHT::S(D)
    • B(c);N_GUARD,SBLOCK::QAB(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • B(c);N_GUARD,P_SPINB(c)::QAB1(C),XB(c)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • R(F);CHECK,P_SPINS(A)
    • Vars
      • K(f);P_SPINB(d),S_FLIGHT::S(D)
      • K(f);N_PINS(A),P_SPINB(d),S_FLIGHT::S(A)
      • K(f);P_SPINS(g),S_FLIGHT::S(D)
      • K(f);N_PINS(A),P_SPINS(g),S_FLIGHT::S(A),XB(d)
      • B(d);N_GUARD,P_SPINB(d)::R1(F),XB(d)
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