MESON Chess Problem Database

Problem Display
PID: 63849 (b6q/1k1P2R1/N6p/2P1B3/P7/8/8/2R1KB2 w - - 0 1)

Mendes de Moraes Filho, Feliciano

3rd Prize, Western Daily Mercury, 1908-1909

b6q/1k1P2R1/N6p/2P1B3/P7/8/8/2R1KB2

#2

9 + 4

16 Chess Amateur (The) 1909

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Bg2#
    • 1...Qc8
      • 2.d8S#
    • 1...Qe8
      • 2.dxe8Q#
  • Tries
    • 1.Rb1+?
      • 1...Kc6
        • 2.Bg2#
      • 1...Ka7!
    • 1.c6+?
      • 1...Ka7
        • 2.Bd4#
      • 1...Kb6!
    • 1.d8Q+?
      • 1...Kc6
        • 2.Sb4#
        • 2.Sb8#
        • 2.Bg2#
        • 2.Bb5#
        • 2.Rc7#
        • 2.Qd6#
        • 2.Qd7#
      • 1...Qxg7!
    • 1.d8R+?
      • 1...Kc6
        • 2.Sb4#
        • 2.Sb8#
        • 2.Bg2#
        • 2.Bb5#
        • 2.Rc7#
        • 2.Rd6#
      • 1...Qxg7!
  • Keys
    • 1.Bd4!
      • threat
        • 2.c6#
      • 1...Qe8+
        • 2.dxe8Q#
      • 1...Kc6
        • 2.Bg2#
      • 1...Ka7
        • 2.c6#
      • 1...Qc8
        • 2.d8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(C)
    • Q(d);N_GUARD,SBLOCK::P=S
    • Q(d);OGATE,P_PINB(F)::PXQ(d)=Q
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(b);S_FLIGHT::B(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • P(E);CHECK
      • Vars
        • K(b);P-FLIGHT::B(F)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • P(H);CHECK
      • Refutation
        • Q(d);XR(I)
    • Try
      • P(H);CHECK
      • Refutation
        • Q(d);XR(I)
  • Actual
    • B(F);
    • Threat
      • P(E)
    • Vars
      • Q(d);CHECK,OGATE::PXQ(d)=Q
      • K(b);S_FLIGHT::B(C)
      • K(b);P-FLIGHT::B(F)+P(E)
      • Q(d);N_GUARD,SBLOCK::P=S
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