MESON Chess Problem Database

Problem Display
PID: 216210 (7Q/3B4/2n5/2B2NR1/2k5/P1b2P2/2RP4/2K5 w - - 0 1)

Dennis, Charles Edwin

Sp. Prize, Croydon Guardian, 1882

7Q/3B4/2n5/2B2NR1/2k5/P1b2P2/2RP4/2K5

#2

10 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Se3#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Rxc3#
      • 1...Kd3
        • 2.Rxc3#
      • 1...Se5!
    • 1.Bxc6?
      • threat
        • 2.Rxc3#
        • 2.Qxc3#
      • 1...Kb3
        • 2.Qxc3#
        • 2.Qg8#
      • 1...Kd3
        • 2.Bb5#
      • 1...Kxc5!
    • 1.Rxc3+?
      • 1...Kd5
        • 2.Se3#
        • 2.Se7#
      • 1...Kb5!
    • 1.Qxc3+?
      • 1...Kd5
        • 2.Se3#
        • 2.Se7#
      • 1...Kb5!
  • Keys
    • 1.Qa8!
      • 1...Kb3
        • 2.Be6#
      • 1...Kd3
        • 2.Qa6#
      • 1...Kb5
        • 2.Sd6#
      • 1...Kxc5
        • 2.Qxc6#
      • 1...Kd5
        • 2.Se3#
      • 1...Sb4
        • 2.Rxc3#
      • 1...Sd4
        • 2.Rxc3#
      • 1...Sa5
        • 2.Rxc3#
      • 1...Se5
        • 2.Rxc3#
      • 1...Sa7
        • 2.Rxc3#
      • 1...Se7
        • 2.Rxc3#
      • 1...Sb8
        • 2.Rxc3#
      • 1...Sd8
        • 2.Rxc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINB(a),S_FLIGHT::R(H)+S(G),DCHECK
  • Tries
    • Try
      • S(G);
      • Threat
        • R1(B),XB(a)
      • Vars
        • K(b);N_SPINB(a),S_FLIGHT::R1(B),XB(a)
      • Refutation
        • S(c);
    • Try
      • B(I);XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • K(b);N_SPINB(a),S_FLIGHT::B(I)
      • Refutation
        • K(b);P-FLIGHT,XB(F)
    • Try
      • R(B);CHECK,XB(a)
      • Refutation
        • K(b);P_SPINS(c),S_FLIGHT
    • Try
      • Q(J);CHECK,XB(a)
      • Refutation
        • K(b);P_SPINS(c),S_FLIGHT
  • Actual
    • Q(J);
    • Vars
      • K(b);N_SPINB(a),S_FLIGHT::B(I)
      • K(b);N_SPINB(a),S_FLIGHT::QAB(J)
      • K(b);N_SPINB(a),P_SPINS(c),S_FLIGHT::S(G)
      • K(b);OGATEB,P-FLIGHT,XB(F)::QAR1(J),XS(c)
      • K(b);N_SPINB(a),P_SPINS(c),S_FLIGHT::R(H)+S(G),DCHECK
      • S(c);::R1(B),XB(a)
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Developed and maintained by Brian Stephenson.
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