MESON Chess Problem Database

Problem Display
PID: 202421 (5K2/2n5/1N1p3R/3PkP2/8/3P4/5Q1b/8 w - - 0 1)

Mosely, Arthur James

Comm., Good Companions, 1923

5K2/2n5/1N1p3R/3PkP2/8/3P4/5Q1b/8

#2

7 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sb5
      • 2.Re6#
    • 1...Sxd5
      • 2.Sc4#
      • 2.Sd7#
      • 2.Re6#
    • 1...Sa6
      • 2.Re6#
    • 1...Se6+
      • 2.Rxe6#
    • 1...Sa8
      • 2.Re6#
    • 1...Se8
      • 2.Re6#
  • Keys
    • 1.Rh5!
      • threat
        • 2.f6#
      • 1...Se6+
        • 2.fxe6#
      • 1...Kf6
        • 2.Sd7#
      • 1...Sxd5
        • 2.Sd7#
      • 1...Bf4
        • 2.Qb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(d);N_GUARD::R1(F)
    • S(d);CHECK,N_GUARD::R1(F),XS(d)
  • Actual
    • R(F);
    • Threat
      • R(F)+P(D)
    • Vars
      • S(d);CHECK,OGATE::R(F)+P(D),XS(d)
      • K(b);S_FLIGHT::S(E)
      • S(d);SBLOCK,XP(C)::S(E)
      • B(a);SBLOCK::QAB(A)
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