MESON Chess Problem Database

Problem Display
PID: 120900 (6nQ/5kP1/3K2p1/6P1/8/8/8/8 w - - 0 1)

Holm, Karl Helmer

Springaren, 1955

6nQ/5kP1/3K2p1/6P1/8/8/8/8

#2

4 + 3

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke8
      • 2.Qxg8#
    • 1...Sf6
      • 2.Qf8#
    • 1...Sh6
      • 2.Qf8#
    • 1...Se7
      • 2.Qf8#
  • Tries
    • 1.Kd7?
      • 1...Sh6
        • 2.Qf8#
      • 1...Se7
        • 2.Qf8#
      • 1...Sf6+!
  • Keys
    • 1.Qh7!
      • 1...Ke8
        • 2.Qxg8#
      • 1...Sf6
        • 2.g8Q#
      • 1...Sh6
        • 2.g8Q#
        • 2.g8R#
      • 1...Se7
        • 2.g8Q#
        • 2.g8R#

This anticipates 33466(2001)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • K(b);P_SPINS(c),S_FLIGHT::QAR2(D),XS(c)
    • S(c);OGATE::QAR1(D)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • S(c);OGATE::QAR1(D)
      • Refutation
        • S(c);CHECK
  • Actual
    • Q(D);
    • Vars
      • K(b);S_FLIGHT::QAR2(D),XS(c)
      • S(c);OGATE::P=Q
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