MESON Chess Problem Database

Problem Display
PID: 191260 (7Q/5p2/7N/4npkb/5b2/4p1p1/1B4RR/KB6 w - - 0 1)

Clark, WA

Western Daily Mercury, 1916

(First published on Fri Oct 13 1916)

7Q/5p2/7N/4npkb/5b2/4p1p1/1B4RR/KB6

#2

7 + 8

15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Qf6#
    • 1...Sf3
      • 2.Qf6#
    • 1...Sc4
      • 2.Qf6#
    • 1...Sc6
      • 2.Qf6#
    • 1...Sg6
      • 2.Bf6#
  • Tries
    • 1.Bxe5?
      • threat
        • 2.Qf6#
      • 1...Kg6
        • 2.Qg7#
      • 1...f6
        • 2.Qxf6#
      • 1...Bxe5+!
    • 1.Qxe5?
      • threat
        • 2.Qf6#
      • 1...Kg6
        • 2.Qg7#
      • 1...Kxh6
        • 2.Qg7#
      • 1...f6
        • 2.Qxf6#
      • 1...Bxe5!
    • 1.Qg7+?
      • 1...Sg6
        • 2.Bf6#
      • 1...Bg6!
  • Keys
    • 1.Sg4!
      • threat
        • 2.Qxh5#
      • 1...Kxg4
        • 2.Qxh5#
      • 1...Kg6
        • 2.Qg8#
      • 1...Bxg4
        • 2.Qh6#
      • 1...gxh2
        • 2.Qf6#
      • 1...fxg4
        • 2.Rxh5#
      • 1...Bg6
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 5
  • Sets
    • S(d);::QAB1(G)
    • S(d);OGATE,SBLOCK::B(C)
  • Tries
    • Try
      • B(C);XS(d)
      • Threat
        • QAB1(G)
      • Vars
        • K(f);P-FLIGHT::QAR1(G)
        • P(h);::QAB1(G),XP(h)
      • Refutation
        • B(c);CHECK,XB(C)
    • Try
      • Q(G);XS(d)
      • Threat
        • QAB1(G)
      • Vars
        • K(f);P-FLIGHT::QAR1(G)
        • K(f);N_SPINP(b),P_SPINB(g),S_FLIGHT,XS(F)::QAB1(G)
        • P(h);::QAB1(G),XP(h)
      • Refutation
        • B(c);P_PINB(C),XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • S(d);OGATE,P_SPINS(d)::B(C)
      • Refutation
        • B(g);P_SPINB(g)
  • Actual
    • S(F);N_PINP(b)
    • Threat
      • QAR1(G),XB(g)
    • Vars
      • K(f);P-FLIGHT,P_SPINP(b),XS(F)::QAB1(G),XB(g)
      • K(f);P-FLIGHT,P_SPINP(e)::QAR2(G)
      • B(g);SBLOCK,XS(F)::QAB1(G)
      • P(b);XR(E)::QAB1(G)
      • P(e);SBLOCK,XS(F)::R1(E),XB(g)
      • B(g);OGATE,SBLOCK::QAB1(G)
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