MESON Chess Problem Database

Problem Display
PID: 194849 (8/3P4/1N1p1P2/K2P1n2/3k4/4N3/2P1R1Q1/8 w - - 0 1)

Sero, ?

Western Daily Mercury, 1917

(First published on Fri Aug 3 1917)

8/3P4/1N1p1P2/K2P1n2/3k4/4N3/2P1R1Q1/8

#2

9 + 3

15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Sxf5+?
      • 1...Kc5
        • 2.Qg1#
        • 2.Qf2#
      • 1...Kc3!
    • 1.Qe4+?
      • 1...Kc3
        • 2.Sd1#
        • 2.Sa4#
        • 2.Qb4#
      • 1...Kc5
        • 2.Sa4#
        • 2.Qb4#
        • 2.Qc4#
      • 1...Kxe4!
    • 1.Qg4+?
      • 1...Kc3
        • 2.Sd1#
        • 2.Sa4#
        • 2.Qb4#
      • 1...Kc5
        • 2.Sa4#
        • 2.Qb4#
        • 2.Qc4#
      • 1...Ke5!
  • Keys
    • 1.Qf2!
      • 1...Kc3
        • 2.Sd1#
      • 1...Ke4
        • 2.Sxf5#
      • 1...Kc5
        • 2.Sxf5#
      • 1...Ke5
        • 2.Sg4#
      • 1...Sxe3
        • 2.Qxe3#
      • 1...Sg3
        • 2.Sd1#
      • 1...Sh4
        • 2.Sd1#
      • 1...Sh6
        • 2.Sd1#
      • 1...Se7
        • 2.Sd1#
      • 1...Sg7
        • 2.Sd1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK,XS(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);S_FLIGHT::S(D)
      • K(a);P-FLIGHT::R(B)+S(D),XS(b)
      • K(a);S_FLIGHT::QAB(C)+S(D),XS(b)
      • K(a);S_FLIGHT::R(B)+S(D),DCHECK
      • S(b);OGATE,P_SPINS(b),XS(D)::QAB1(C),XS(b)
      • S(b);N_GUARD::QAB(C)+S(D)
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