MESON Chess Problem Database

Problem Display
PID: 224216 (k1K5/4B3/8/p7/4R3/8/6n1/7B w - - 0 1)

Woodard, Eugene

Dubuque Chess Journal, 1887

k1K5/4B3/8/p7/4R3/8/6n1/7B

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...a4
      • 2.Rxa4#
  • Tries
    • 1.Bxg2?
      • 1...a4
        • 2.Rxa4#
      • 1...Ka7!
    • 1.Rc4?
      • 1...a4
        • 2.Rxa4#
      • 1...Ka7!
    • 1.Rd4?
      • 1...a4
        • 2.Rxa4#
      • 1...Ka7!
    • 1.Rf4?
      • 1...a4
        • 2.Rxa4#
      • 1...Ka7!
    • 1.Rg4?
      • 1...a4
        • 2.Rxa4#
      • 1...Ka7!
    • 1.Rh4?
      • 1...a4
        • 2.Rxa4#
      • 1...Ka7!
    • 1.Re5?
      • threat
        • 2.Rxa5#
      • 1...a4
        • 2.Ra5#
      • 1...Ka7!
  • Keys
    • 1.Bc5!
      • 1...Se1
        • 2.Rxe1#
      • 1...Se3
        • 2.Rxe3#
      • 1...Sf4
        • 2.Rxf4#
      • 1...Sh4
        • 2.Rxh4#
      • 1...a4
        • 2.Rxa4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB::R(B),XP(b)
  • Tries
    • Try
      • B(A);XS(a)
      • Vars
        • P(b);::B(A)+R(B),DCHECK,XP(b)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(B);P_PINS(a)
      • Vars
        • P(b);OGATEB::R(B),XP(b)
      • Refutation
        • K(c);N_SPINS(a),P-FLIGHT
    • Try
      • R(B);P_PINS(a)
      • Vars
        • P(b);OGATEB::R(B),XP(b)
      • Refutation
        • K(c);N_SPINS(a),P-FLIGHT
    • Try
      • R(B);P_PINS(a)
      • Vars
        • P(b);OGATEB::R(B),XP(b)
      • Refutation
        • K(c);N_SPINS(a),P-FLIGHT
    • Try
      • R(B);P_PINS(a)
      • Vars
        • P(b);OGATEB::R(B),XP(b)
      • Refutation
        • K(c);N_SPINS(a),P-FLIGHT
    • Try
      • R(B);P_PINS(a)
      • Vars
        • P(b);OGATEB::R(B),XP(b)
      • Refutation
        • K(c);N_SPINS(a),P-FLIGHT
    • Try
      • R(B);P_PINS(a)
      • Threat
        • R(B),XP(b)
      • Vars
        • P(b);::R(B)
      • Refutation
        • K(c);N_SPINS(a),P-FLIGHT
  • Actual
    • B(C);
    • Vars
      • S(a);OGATEB::B(A)+R(B),XS(a)
      • P(b);OGATEB::R(B),XP(b)
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