MESON Chess Problem Database

Problem Display
PID: 175475 (8/1N6/2kp2R1/3N4/8/3K4/8/R6Q w - - 0 1)

Salway, Herbert A

The Field, 1899

(First published on Sat Apr 15 1899)

8/1N6/2kp2R1/3N4/8/3K4/8/R6Q

#2

6 + 2

533 Philadelphia Times 1899
6490 yacpdb 2018
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sxd6?
      • 1...Kc5
        • 2.Rc1#
      • 1...Kd7!
    • 1.Rxd6+?
      • 1...Kb5
        • 2.Ra5#
        • 2.Rb6#
        • 2.Qb1#
      • 1...Kxb7!
    • 1.Qb1?
      • threat
        • 2.Rxd6#
      • 1...Kxd5
        • 2.Qb5#
      • 1...Kd7!
    • 1.Qc1+?
      • 1...Kb5
        • 2.Sxd6#
        • 2.Ra5#
        • 2.Qc4#
      • 1...Kxd5
        • 2.Ra5#
      • 1...Kxb7
        • 2.Qc7#
      • 1...Kd7!
    • 1.Qh7?
      • 1...Kb5
        • 2.Qd7#
      • 1...Kxd5!
  • Keys
    • 1.Qh8!
      • 1...Kb5
        • 2.Qe8#
      • 1...Kxd5
        • 2.Rxd6#
      • 1...Kxb7
        • 2.Qa8#
      • 1...Kd7
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);XP(b)
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);CHECK,XP(b)
      • Refutation
        • K(a);S_FLIGHT,XS(F)
    • Try
      • Q(B);
      • Threat
        • R1(E),XP(b)
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT,XS(D)::QAR2(B)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT,XS(D)::R(A)
        • K(a);N_SPINP(b),OGATE,S_FLIGHT,XS(F)::QAR1(B)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAB(B)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT,XS(D)
  • Actual
    • Q(B);
    • Vars
      • K(a);N_SPINP(b),S_FLIGHT::QAB(B)
      • K(a);N_SPINP(b),S_FLIGHT,XS(D)::R1(E),XP(b)
      • K(a);N_SPINP(b),OGATEB,S_FLIGHT,XS(F)::QAB1(B)
      • K(a);N_SPINP(b),S_FLIGHT::R1(E),XP(b)
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