MESON Chess Problem Database

Problem Display
PID: 218458 (3B1Q2/8/3PPN1p/4k2P/1p2p1nR/1K2N2B/5P2/8 w - - 0 1)

Dennis, Charles Edwin

Philadelphia Times, 1882

3B1Q2/8/3PPN1p/4k2P/1p2p1nR/1K2N2B/5P2/8

#2

11 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Sfxg4#
      • 2.Sd7#
    • 1...Kxe6
      • 2.Qe7#
    • 1...Sh2
      • 2.Rxe4#
    • 1...Sxe3
      • 2.Rxe4#
    • 1...Sxf6
      • 2.Bxf6#
  • Tries
    • 1.Sfxg4+?
      • 1...Kxe6
        • 2.Qe7#
      • 1...Kd4!
    • 1.Sd7+?
      • 1...Kxe6
        • 2.Bxg4#
        • 2.Qe7#
      • 1...Kd4!
    • 1.Bxg4?
      • 1...Kf4
        • 2.Sd7#
      • 1...Kd4!
    • 1.Rxg4?
      • threat
        • 2.Rxe4#
      • 1...Kxe6
        • 2.Rxe4#
        • 2.Rg5#
        • 2.Qe7#
      • 1...Kd4!
  • Keys
    • 1.d7!
      • 1...Kd4
        • 2.Qd6#
      • 1...Kf4
        • 2.Sfxg4#
      • 1...Kxe6
        • 2.Qe7#
      • 1...Sxf2
        • 2.Qc5#
      • 1...Sxe3
        • 2.Rxe4#
      • 1...Sxf6
        • 2.Bxf6#
      • 1...Sh2
        • 2.Rxe4#
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(d);OGATEB,P-FLIGHT,P_SPINS(c),XP(H)::QAR1(K)
    • S(c);OGATE::R1(E),XP(b)
    • S(c);OGATE,XS(C)::R1(E),XP(b)
    • S(c);OGATE,XS(I)::B(J),XS(c)
  • Tries
    • Try
      • S(I);CHECK,XS(c)
      • Vars
        • K(d);P-FLIGHT,XP(H)::QAR1(K)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(I);CHECK
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • B(D);XS(c)
      • Vars
        • K(d);S_FLIGHT::QAR(K)+S(I)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • R(E);XS(c)
      • Threat
        • R1(E),XP(b)
      • Refutation
        • K(d);P_SPINP(b),S_FLIGHT
  • Actual
    • P(G);
    • Vars
      • K(d);S_FLIGHT::QAR2(K)
      • K(d);P_SPINS(c),S_FLIGHT::QAR(K)+S(I),XS(c)
      • K(d);OGATEB,P-FLIGHT,P_SPINS(c),XP(H)::QAR1(K)
      • S(c);XP(A)::QAR2(K)
      • S(c);OGATE,XS(C)::R1(E),XP(b)
      • S(c);OGATE,XS(I)::B(J),XS(c)
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