MESON Chess Problem Database

Problem Display
PID: 153733 (R2rn2b/2BNp3/6K1/QPpk1p1p/P5b1/3N4/8/1BR5 w - - 0 1)

Blake, CS

Cheltenham Examiner, 1890

(First published on Wed Nov 19 1890)

R2rn2b/2BNp3/6K1/QPpk1p1p/P5b1/3N4/8/1BR5

#2

10 + 9

15239 Valois Notebooks 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Sf4#
  • Tries
    • 1.Qd2?
      • threat
        • 2.Sf4#
      • 1...Kd4
        • 2.Se1#
        • 2.Sb2#
        • 2.Sf2#
        • 2.Sb4#
        • 2.Sf4#
        • 2.S3xc5#
        • 2.S3e5#
      • 1...Ke4
        • 2.Se1#
        • 2.S3e5#
      • 1...Ke6
        • 2.Sf4#
        • 2.S3xc5#
      • 1...f4
        • 2.Sxf4#
      • 1...Bc3!
  • Keys
    • 1.Sf4+!
      • 1...Kd4
        • 2.Qd2#
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(i);SBLOCK::S(C)
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAR(E)+S(C),DCHECK
      • Vars
        • P(d);::QAR(E)+S(C),DCHECK,XP(d)
      • Refutation
        • B(i);
  • Actual
    • S(C);CHECK
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