MESON Chess Problem Database

Problem Display
PID: 222870 (8/8/Qn1pN3/3pkpK1/4Pr2/7B/7B/8 w - - 0 1)

Blanchard, H

Leeds Mercury Weekly Supplement, 1882

(First published on Sat May 13 1882)

8/8/Qn1pN3/3pkpK1/4Pr2/7B/7B/8

#2

6 + 6

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qe2#
    • 1...fxe4
      • 2.Bxf4#
  • Tries
    • 1.Bxf4+?
      • 1...Kxe4
        • 2.Bg2#
        • 2.Qe2#
      • 1...Kxe6!
  • Keys
    • 1.Qb5!
      • 1...Kxe4
        • 2.Qe2#
      • 1...Kxe6
        • 2.Qe8#
      • 1...fxe4
        • 2.Bxf4#
      • 1...Sa4
        • 2.Qxd5#
      • 1...Sc4
        • 2.Qxd5#
      • 1...Sd7
        • 2.Qxd5#
      • 1...Sa8
        • 2.Qxd5#
      • 1...Sc8
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINR(a),OGATEB,P-FLIGHT,XP(C)::QAR2(E)
    • P(d);SBLOCK,XP(C)::B(A),XR(a)
  • Tries
    • Try
      • B(A);CHECK,XR(a)
      • Refutation
        • K(c);P-FLIGHT,P_SPINP(d),XS(F)
  • Actual
    • Q(E);P_PINP(b)
    • Vars
      • K(c);N_SPINP(b),N_SPINR(a),OGATEB,P-FLIGHT,XP(C)::QAR2(E)
      • K(c);N_SPINP(b),N_SPINR(a),OGATEB,P-FLIGHT,P_SPINP(d),XS(F)::QAR2(E)
      • P(d);SBLOCK,XP(C)::B(A),XR(a)
      • S(e);N_GUARD::QAR1(E),XP(b)
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