MESON Chess Problem Database

Problem Display
PID: 145060 (8/N7/3p1N2/3p1P2/1p1k2K1/1P6/2P2P2/1B5Q w - - 0 1)

Arroisson, H

Islensht Skakblad, 1926

8/N7/3p1N2/3p1P2/1p1k2K1/1P6/2P2P2/1B5Q

#2

9 + 4

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Tries
    • 1.Se4?
      • threat
        • 2.Sc6#
      • 1...Ke5
        • 2.Sc6#
      • 1...dxe4!
    • 1.Sxd5?
      • 1...Ke5
        • 2.Sc6#
      • 1...Kc5!
    • 1.Sb5+?
      • 1...Ke5
        • 2.Sd7#
      • 1...Kc5!
    • 1.c3+?
      • 1...Kc5
        • 2.Sd7#
      • 1...Ke5
        • 2.Sd7#
      • 1...bxc3
        • 2.Qxd5#
      • 1...Kxc3!
  • Keys
    • 1.Qh8!
      • 1...Kc3
        • 2.Se4#
      • 1...Kc5
        • 2.Sd7#
      • 1...Ke5
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(H);
      • Threat
        • S(I)
      • Vars
        • K(b);S_FLIGHT::S(I)
      • Refutation
        • P(c);XS(H)
    • Try
      • S(H);XP(c)
      • Vars
        • K(b);S_FLIGHT::S(I)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(I);CHECK
      • Vars
        • K(b);S_FLIGHT::S(H)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(C);CHECK
      • Vars
        • K(b);S_FLIGHT::S(H)
        • P(a);SBLOCK,XP(C)::QAR1(B),XP(c)
      • Refutation
        • K(b);S_FLIGHT,XP(C)
  • Actual
    • Q(B);
    • Vars
      • K(b);S_FLIGHT::QAB(B)+S(H),DCHECK
      • K(b);S_FLIGHT::S(H)
      • K(b);S_FLIGHT::S(I)
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