MESON Chess Problem Database

Problem Display
PID: 165614 (5R2/2Qp3K/4k3/4p3/3b3B/2pP4/2P1N3/8 w - - 0 1)

Anonymous

British Chess Magazine 15. (Healey MT) Ty., 1909-1910

5R2/2Qp3K/4k3/4p3/3b3B/2pP4/2P1N3/8

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...e4
      • 2.Sf4#
    • 1...d5
      • 2.Rf6#
      • 2.Qc6#
      • 2.Qe7#
    • 1...d6
      • 2.Qf7#
  • Tries
    • 1.Rf6+?
      • 1...Kd5
        • 2.Rd6#
        • 2.Qd6#
        • 2.Qc4#
      • 1...Ke7!
    • 1.Re8+?
      • 1...Kf5
        • 2.Qxd7#
      • 1...Kf7
        • 2.Qxd7#
      • 1...Kd5!
    • 1.Qc4+?
      • 1...d5
        • 2.Qc6#
      • 1...Kd6!
  • Keys
    • 1.Rf5!
      • 1...Kd5
        • 2.Sf4#
      • 1...Kxf5
        • 2.Qxd7#
      • 1...Bg1
        • 2.Qxe5#
      • 1...Bf2
        • 2.Qxe5#
      • 1...Be3
        • 2.Qxe5#
      • 1...Bc5
        • 2.Qxe5#
      • 1...Bb6
        • 2.Qxe5#
      • 1...Ba7
        • 2.Qxe5#
      • 1...e4
        • 2.Sxd4#
      • 1...d5
        • 2.Rf6#
      • 1...d6
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::S(B)
    • P(e);OGATE,SBLOCK::QAB1(E)
  • Tries
    • Try
      • R(G);CHECK
      • Refutation
        • K(d);P-FLIGHT,P_SPINP(e)
    • Try
      • R(G);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB(E),XP(e)
        • K(d);P_SPINP(e),S_FLIGHT::QAR2(E),XP(e)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • P(e);N_GUARD,P_SPINP(e)::QAR2(E)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • R(G);
    • Vars
      • K(d);P_SPINP(c),S_FLIGHT::S(B)
      • K(d);S_FLIGHT,XR(G)::QAB(E),XP(e)
      • B(b);N_GUARD::QAR1(E),XP(c)
      • P(c);N_GUARD::S(B),XB(b)
      • P(e);SBLOCK::R1(G)
      • P(e);OGATE,SBLOCK::QAB1(E)
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