MESON Chess Problem Database

Problem Display
PID: 222560 (8/7Q/7P/1PN1k3/4P2K/3p4/1P1N4/8 w - - 0 1)

Crusemann, Richard

Brooklyn Chess Chronicle, 1883

8/7Q/7P/1PN1k3/4P2K/3p4/1P1N4/8

#2

8 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Qg7#
  • Tries
    • 1.Sc4+?
      • 1...Kf4
        • 2.Qf5#
        • 2.Qf7#
      • 1...Kf6
        • 2.Qg7#
        • 2.e5#
      • 1...Kd4!
    • 1.Qg6?
      • 1...Kf4
        • 2.Qg3#
        • 2.Qg5#
      • 1...Kd4!
    • 1.Qc7+?
      • 1...Kf6
        • 2.Qg7#
      • 1...Kd4!
    • 1.Qd7?
      • 1...Kf6
        • 2.Qe6#
        • 2.Qg7#
      • 1...Kf4!
    • 1.Qe7+?
      • 1...Kf4
        • 2.Qg5#
      • 1...Kd4!
    • 1.Qg7+?
      • 1...Kf4
        • 2.Qg3#
        • 2.Qg5#
      • 1...Kd6!
  • Keys
    • 1.Qa7!
      • 1...Kd4
        • 2.Sd7#
      • 1...Kf4
        • 2.Sxd3#
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB1(H)
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(H);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(H)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(H);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(H)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(H);CHECK
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(H);
    • Vars
      • K(b);S_FLIGHT::QAB(H)+S(F)
      • K(b);S_FLIGHT::S(F),XP(a)
      • K(b);S_FLIGHT::S(B)
      • K(b);S_FLIGHT::QAB1(H)
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