MESON Chess Problem Database

Problem Display
PID: 219212 (8/8/3p1B2/3PrPP1/1P2k3/8/2N3N1/1Q1K3B w - - 0 1)

Thursby, John Ormerod Scarlett

The Field, 1884

(First published on Sat Feb 2 1884)

8/8/3p1B2/3PrPP1/1P2k3/8/2N3N1/1Q1K3B

#2

10 + 3

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Sge3#
    • 1...Kxf5
      • 2.Sce3#
    • 1...Rxd5+
      • 2.Sd4#
  • Tries
    • 1.Sce1+?
      • 1...Kd4
        • 2.Qd3#
      • 1...Kxd5!
    • 1.Sge3+?
      • 1...Kd3
        • 2.Qb3#
      • 1...Kf4!
    • 1.Sh4+?
      • 1...Kd3
        • 2.Qb3#
      • 1...Kf4!
  • Keys
    • 1.Ke2!
      • 1...Kxd5+
        • 2.Sge3#
      • 1...Kxf5+
        • 2.Sce3#
      • 1...Rxd5
        • 2.Sd4#
      • 1...Rxf5
        • 2.Sce3#
      • 1...Re6
        • 2.Sce3#
      • 1...Re7
        • 2.Sce3#
      • 1...Re8
        • 2.Sce3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT,XP(G)::B(C)+S(E),DCHECK
    • K(a);S_FLIGHT,XP(H)::QAB(A)+S(D),DCHECK
    • R(b);CHECK,SBLOCK,XP(G)::QAB(A)+S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINR(b)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT,XP(G)
    • Try
      • S(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(B);S_FLIGHT
    • Vars
      • K(a);CHECK,S_FLIGHT,XP(G)::B(C)+S(E),DCHECK
      • K(a);CHECK,S_FLIGHT,XP(H)::QAB(A)+S(D),DCHECK
      • R(b);SBLOCK,XP(G)::QAB(A)+S(D)
      • R(b);XP(H)::QAB(A)+S(D)
      • R(b);::QAB(A)+S(D)
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