MESON Chess Problem Database

Problem Display
PID: 166407 (b2r1n2/3p1K2/1B3N2/Rn2kp2/5p2/2P5/8/3R4 w - - 0 1)

Ellerman, Arnoldo

Tidskrift for Schack, 1918

b2r1n2/3p1K2/1B3N2/Rn2kp2/5p2/2P5/8/3R4

#2

6 + 8

15148 Sadier Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5+
      • 2.Rxd5#
    • 1...d6
      • 2.Bd4#
  • Tries
    • 1.Rxb5+?
      • 1...Bd5+
        • 2.Rdxd5#
        • 2.Rbxd5#
      • 1...d5!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Bd6#
      • 1...Bd5+
        • 2.Rxd5#
      • 1...Sd6+
        • 2.Bxd6#
      • 1...Sd4
        • 2.cxd4#
      • 1...d5
        • 2.Re1#
      • 1...d6
        • 2.Bd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(f);CHECK,N_GUARD,N_SPINS(b)::R1(A),XB(f)
    • P(e);SBLOCK::B(D)
  • Tries
    • Try
      • R(C);CHECK,XS(b)
      • Refutation
        • P(e);P_SPINP(e)
  • Actual
    • B(D);N_PINS(b)
    • Threat
      • B(D)
    • Vars
      • B(f);CHECK,N_GUARD::R1(A),XB(f)
      • S(b);CHECK::R(C)+B(D),DCHECK,XS(b)
      • S(b);OGATE::P(B),XS(b)
      • P(e);S_CUTB(f)::R(A)
      • P(e);SBLOCK::B(D)
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