MESON Chess Problem Database

Problem Display
PID: 169156 (7K/6N1/6pk/1P1PP3/6Pp/7P/3P2b1/1Q6 w - - 0 1)

Lind, Ingemar

2nd Comm., SuperProblem 164. TT, 2016

7K/6N1/6pk/1P1PP3/6Pp/7P/3P2b1/1Q6

#2

9 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...g5
      • 2.Qh7#
  • Tries
    • 1.Qf5?
      • threat
        • 2.g5#
      • 1...g5
        • 2.Qe6#
        • 2.Qh7#
        • 2.Qf6#
      • 1...gxf5!
    • 1.Qe1?
      • threat
        • 2.Qxh4#
      • 1...Kg5
        • 2.Qe3#
      • 1...g5!
  • Keys
    • 1.Qg1!
      • 1...Kg5
        • 2.Qe3#
      • 1...Bxh3
        • 2.g5#
      • 1...Bxd5
        • 2.g5#
      • 1...Bf1
        • 2.g5#
      • 1...Bh1
        • 2.g5#
      • 1...Bf3
        • 2.g5#
      • 1...Be4
        • 2.g5#
      • 1...g5
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATE,SBLOCK::QAR1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • P(D)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR2(A),XP(b)
      • Vars
        • K(d);S_FLIGHT::QAB(A)
      • Refutation
        • P(c);
  • Actual
    • Q(A);
    • Vars
      • K(d);S_FLIGHT::QAB(A)
      • B(a);XP(C)::P(D)
      • B(a);XP(F)::P(D)
      • B(a);::P(D)
      • P(c);OGATEB,SBLOCK::QAR(A)
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