MESON Chess Problem Database

Problem Display
PID: 118349 (8/4K1p1/4p3/5k2/4p3/4P1Q1/8/7B w - - 0 1)

Rasmussen, Knud AK

Toronto Star, 1955

8/4K1p1/4p3/5k2/4p3/4P1Q1/8/7B

#2

4 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...g6
      • 2.Qf4#
  • Tries
    • 1.Kf7?
      • threat
        • 2.Qf4#
      • 1...e5
        • 2.Qg6#
      • 1...g5!
    • 1.Qg4+?
      • 1...Ke5
        • 2.Qxe6#
        • 2.Qxe4#
        • 2.Qg5#
      • 1...Kxg4!
    • 1.Qg6+?
      • 1...Ke5
        • 2.Qxe4#
        • 2.Qg5#
        • 2.Qxe6#
      • 1...Kxg6!
  • Keys
    • 1.Qh4!
      • 1...Ke5
        • 2.Qg5#
        • 2.Qxe4#
      • 1...Kg6
        • 2.Bxe4#
      • 1...e5
        • 2.Bxe4#
      • 1...g5
        • 2.Qxe4#
      • 1...g6
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::QAR1(C)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAR1(C)
      • Vars
        • P(c);SBLOCK::QAB1(C)
      • Refutation
        • P(d);
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
  • Actual
    • Q(C);
    • Vars
      • K(b);S_FLIGHT::B(A),XP(a)
      • P(c);SBLOCK::B(A),XP(a)
      • P(d);SBLOCK::QAB1(C),XP(a)
      • P(d);SBLOCK::QAR1(C)
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