MESON Chess Problem Database

Problem Display
PID: 195877 (Q7/1q6/1n6/8/6p1/4P3/7p/R3KB1k w Q - 0 1)

Moen, Kabe

StrateGems, 2018

Q7/1q6/1n6/8/6p1/4P3/7p/R3KB1k

#2

5 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Qg2
      • 2.Qxg2#
  • Tries
    • 1.Qxb7+?
      • 1...Kg1
        • 2.Qg2#
      • 1...Sd5!
  • Keys
    • 1.Bh3!
      • threat
        • 2.Kd2#
        • 2.Ke2#
        • 2.Kf2#
        • 2.0-0-0#
      • 1...Kg1
        • 2.Ke2#
      • 1...Qxa8
        • 2.0-0-0#
      • 1...Sxa8
        • 2.0-0-0#
      • 1...gxh3
        • 2.Kf2#
      • 1...Qg2
        • 2.Qxg2#
        • 2.0-0-0#
      • 1...Qf3
        • 2.Kd2#
      • 1...Qd5
        • 2.Ke2#
        • 2.Kf2#
      • 1...Qc6
        • 2.Kd2#
        • 2.Ke2#
        • 2.Kf2#
      • 1...Sc4
        • 2.Ke2#
        • 2.Kf2#
        • 2.0-0-0#
      • 1...Sd5
        • 2.0-0-0#
      • 1...g3
        • 2.Kd2#
        • 2.Ke2#
        • 2.0-0-0#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • Q(e);OGATE::QAB1(E),XQ(e)
  • Tries
    • Try
      • Q(E);CHECK,XQ(e)
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • S(d);P_SPINS(d)
  • Actual
    • B(C);
    • Threat
      • DUALS(4)
    • Vars
      • K(a);N_SPINQ(e),P-FLIGHT::R(A)+K(B)
      • Q(e);N_SPINQ(e),XQ(E)::0-0-0
      • S(d);N_SPINQ(e),XQ(E)::0-0-0
      • P(c);XB(C)::R(A)+K(B)
      • Q(e);::R(A)+K(B)
      • S(d);N_SPINQ(e)::0-0-0
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