MESON Chess Problem Database

Problem Display
PID: 271464 (4Q3/1N1p4/1B1p1p2/1K2bq2/4kp2/2pNp3/2B3R1/8 w - - 0 1)

Caine, Walter Edmund

Sunday Referee, 1933

(First published on Sun Mar 12 1933)

4Q3/1N1p4/1B1p1p2/1K2bq2/4kp2/2pNp3/2B3R1/8

#2

7 + 9

15239 Valois Notebooks 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Se1#
    • 1...Kd5
      • 2.Sb4#
    • 1...d5
      • 2.Se1#
      • 2.Sxe5#
  • Tries
    • 1.Sf2+?
      • 1...Kd5
        • 2.Bb3#
      • 1...Kf3!
    • 1.Sxd6+?
      • 1...Kf3
        • 2.Se1#
      • 1...Kd5!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Sxd6#
      • 1...Bd4+
        • 2.Sbc5#
      • 1...Kf3
        • 2.Se1#
      • 1...Kd5
        • 2.Sd8#
      • 1...d5
        • 2.Se1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);N_GUARD,N_SPINB(e),S_FLIGHT::S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(c);N_GUARD,N_SPINB(e),S_CUTP(b),S_FLIGHT::B(A)
      • Refutation
        • K(c);N_SPINB(e),S_FLIGHT
    • Try
      • S(F);CHECK,XP(g)
      • Vars
        • K(c);N_GUARD,N_SPINB(e),S_FLIGHT::S(C)
      • Refutation
        • K(c);N_SPINB(e),S_FLIGHT
  • Actual
    • Q(G);N_PINB(e)
    • Threat
      • QAB(G)+S(F),DCHECK,XP(g)
    • Vars
      • B(e);CHECK,SBLOCK::QAB(G)+S(F),DCHECK
      • K(c);N_GUARD,S_FLIGHT::S(C)
      • K(c);S_CUTP(g),S_FLIGHT::QAB(G)+S(F)
      • P(g);SBLOCK::B(A)+S(C)
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