MESON Chess Problem Database

Problem Display
PID: 194779 (1R3Qn1/4P2P/4P1BP/2P3P1/3k2pp/1P4P1/7p/R3K2N w - 0 1)

Reddmann, Hauke

Die Schwalbe, 2018

1R3Qn1/4P2P/4P1BP/2P3P1/3k2pp/1P4P1/7p/R3K2N

#2

14 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qf2#
      • 2.Qf4#
  • Tries
    • 1.Rd1+?
      • 1...Ke3
        • 2.Rd3#
        • 2.Qf2#
        • 2.Qf4#
      • 1...Kxc5
        • 2.Qc8#
      • 1...Ke5
        • 2.Qf5#
      • 1...Kc3!
    • 1.Qf4+?
      • 1...Kc3
        • 2.Qd2#
        • 2.Qe5#
      • 1...Kd5
        • 2.Qd6#
      • 1...Kxc5!
  • Keys
    • 1.Qd8+!
      • 1...Kc3
        • 2.Qd2#
      • 1...Ke3
        • 2.Qd3#
      • 1...Kxc5
        • 2.Rc1#
      • 1...Ke5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(b);S_FLIGHT,XP(F)::QAR(N)
        • K(b);S_FLIGHT::QAR1(N)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(N);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(N)
      • Refutation
        • K(b);S_FLIGHT,XP(F)
  • Actual
    • Q(N);CHECK
    • Vars
      • K(b);OGATE,S_FLIGHT::QAB1(N)
      • K(b);OGATE,S_FLIGHT::QAR1(N)
      • K(b);S_FLIGHT,XP(F)::R(A)
      • K(b);S_FLIGHT::QAB1(N)
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