MESON Chess Problem Database

Problem Display
PID: 213511 (8/7Q/N7/8/4P1K1/1pBk4/1P6/8 w - - 0 1)

Clark, DW

Deutsche Schachzeitung, 1884

8/7Q/N7/8/4P1K1/1pBk4/1P6/8

#2

6 + 2

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qf5?
      • 1...Ke2
        • 2.Qf3#
      • 1...Ke3
        • 2.Qf3#
      • 1...Kc4
        • 2.Qf1#
        • 2.Qd5#
      • 1...Kc2!
    • 1.Qh3+?
      • 1...Ke2
        • 2.Qf3#
      • 1...Kc4
        • 2.Qf1#
      • 1...Kxe4
        • 2.Qf3#
      • 1...Kc2!
    • 1.Qf7?
      • 1...Ke2
        • 2.Qf3#
      • 1...Ke3
        • 2.Qf3#
      • 1...Kxe4
        • 2.Qf3#
      • 1...Kc2!
  • Keys
    • 1.Qh1!
      • 1...Kc2
        • 2.Sb4#
      • 1...Ke2
        • 2.Qf3#
      • 1...Ke3
        • 2.Qf3#
      • 1...Kc4
        • 2.Qf1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);
      • Vars
        • K(b);S_FLIGHT::QAB1(F)
        • K(b);P-FLIGHT::QAR1(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(F)
        • K(b);S_FLIGHT::QAB(F)
        • K(b);S_FLIGHT,XP(C)::QAB1(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(b);S_FLIGHT::QAB1(F)
        • K(b);P-FLIGHT::QAR1(F)
        • K(b);S_FLIGHT,XP(C)::QAB1(F)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(b);S_FLIGHT::S(E)
      • K(b);S_FLIGHT::QAB1(F)
      • K(b);P-FLIGHT::QAR1(F)
      • K(b);S_FLIGHT::QAB(F)
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