MESON Chess Problem Database

Problem Display
PID: 221421 (8/8/8/8/N2k1Kp1/1P4Q1/8/8 w - - 0 1)

Muller, Dieter

SuperProblem 158. TT, 2015

8/8/8/8/N2k1Kp1/1P4Q1/8/8

#2

4 + 2

15148 Sadier Collection 2020
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qe1?
      • threat
        • 2.Qd2#
        • 2.Qd1#
        • 2.Qe4#
      • 1...Kd3
        • 2.Qd1#
      • 1...Kd5!
    • 1.Qg1+?
      • 1...Kd3
        • 2.Qd1#
      • 1...Kd5!
  • Keys
    • 1.Qxg4!
      • threat
        • 2.Qd1#
        • 2.Qd7#
      • 1...Kd3
        • 2.Qd1#
      • 1...Kd5
        • 2.Qd7#

Anticipated by 81733(2007)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(B);XP(b)
    • Threat
      • DUALS(2)
    • Vars
      • K(a);P-FLIGHT::QAR2(B)
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