MESON Chess Problem Database

Problem Display
PID: 243430 (1K3B2/1ppR1N2/3bN3/1P1k1P2/3p1R2/1qp1p3/3rB3/8 w - - 0 1)

Beale, John Lindsay

Chess World (The), 1950

1K3B2/1ppR1N2/3bN3/1P1k1P2/3p1R2/1qp1p3/3rB3/8

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qc4
      • 2.Bf3#
    • 1...Ra2
      • 2.Rxd4#
    • 1...Rb2
      • 2.Rxd4#
    • 1...Rc2
      • 2.Rxd4#
    • 1...Rxe2
      • 2.Rxd4#
    • 1...d3
      • 2.Bf3#
      • 2.Rd4#
    • 1...c5+
      • 2.Sc7#
      • 2.Rxd6#
    • 1...c6+
      • 2.Rxd6#
  • Keys
    • 1.Rxc7!
      • threat
        • 2.Bf3#
      • 1...Bxc7+
        • 2.Sxc7#
      • 1...Rxe2
        • 2.Rxd4#
      • 1...Qd1
        • 2.Bc4#
      • 1...Qc2
        • 2.Bc4#
      • 1...Qb1
        • 2.Bc4#
      • 1...Bc5
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 5
  • Sets
    • Q(b);SBLOCK::B(A)
    • R(a);N_GUARD::R1(B),XP(e)
    • R(a);N_GUARD,XB(A)::R1(B),XP(e)
    • P(i);CHECK,N_GUARD::R1(F),XB(g)
  • Actual
    • R(F);N_PINB(g),P_SPINR(F),XP(i)
    • Threat
      • B(A)
    • Vars
      • B(g);CHECK,XR(F)::S(E),XB(g)
      • R(a);N_GUARD,XB(A)::R1(B),XP(e)
      • Q(b);N_GUARD::B(A)
      • B(g);N_PINR(F)::R1(F),XB(g)
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