MESON Chess Problem Database

Problem Display
PID: 169154 (8/1K6/1p4p1/bkp5/1p6/8/1NP4n/6Q1 w - - 0 1)

Lind, Ingemar

2nd HM., SuperProblem 164. TT, 2016

8/1K6/1p4p1/bkp5/1p6/8/1NP4n/6Q1

#2

4 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qg5#
  • Tries
    • 1.Qe3?
      • threat
        • 2.Qe8#
      • 1...c4
        • 2.Qg5#
        • 2.Qe5#
      • 1...b3!
    • 1.Qd4?
      • threat
        • 2.Qc4#
        • 2.Qd7#
      • 1...b3
        • 2.Qa4#
        • 2.Qc4#
      • 1...c4
        • 2.Qe5#
        • 2.Qxc4#
        • 2.Qd5#
      • 1...cxd4!
    • 1.Qd1?
      • threat
        • 2.Qd7#
      • 1...c4
        • 2.Qd5#
      • 1...b3!
    • 1.Qf1+?
      • 1...c4
        • 2.Qxc4#
      • 1...Sxf1!
    • 1.Qg4?
      • threat
        • 2.Qd7#
        • 2.Qc4#
      • 1...c4
        • 2.Qxc4#
        • 2.Qg5#
      • 1...b3
        • 2.Qa4#
        • 2.Qc4#
      • 1...Sxg4!
    • 1.Qxg6?
      • threat
        • 2.Qe8#
        • 2.Qc6#
      • 1...c4
        • 2.Qf5#
        • 2.Qh5#
        • 2.Qg5#
        • 2.Qc6#
      • 1...b3!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qe8#
      • 1...c4
        • 2.Qe5#
      • 1...b3
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(e);OGATEB::QAR(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • P(e);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • P(e);OGATEB::QAR2(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);CHECK
      • Vars
        • P(e);P_SPINP(e)::QAB1(A),XP(e)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);XP(g)
      • Threat
        • DUALS(2)
      • Refutation
        • P(b);
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • P(e);OGATEB::QAR(A)
      • P(b);N_GUARD::P(C)
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