MESON Chess Problem Database

Problem Display
PID: 274598 (1n6/1b3p2/3pP3/3kpN2/2RB2P1/pK6/B1PpQ2b/1n6 w - - 0 1)

Ellerman, Arnoldo

Western Morning News, 1925

(First published on Sat Mar 21 1925)

1n6/1b3p2/3pP3/3kpN2/2RB2P1/pK6/B1PpQ2b/1n6

#2

9 + 10

15239 Valois Notebooks 2024

SOLUTION

  • SOUND
  • Sets
    • 1...exd4
      • 2.Se7#
    • 1...fxe6
      • 2.Se7#
  • Tries
    • 1.Se3+?
      • 1...Ke4
        • 2.Ba1#
        • 2.Bb2#
        • 2.Bc3#
        • 2.Bc5#
        • 2.Bb6#
        • 2.Ba7#
      • 1...Kxe6!
  • Keys
    • 1.Rc6!
      • threat
        • 2.Rxd6#
      • 1...Kxc6
        • 2.Qc4#
      • 1...Kxe6
        • 2.Rxd6#
      • 1...Bxc6
        • 2.Kb4#
      • 1...Sxc6
        • 2.Ka4#
      • 1...exd4
        • 2.Se7#
      • 1...e4
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(f);XB(F)::S(H)
    • P(i);SBLOCK,XP(I)::S(H)
  • Tries
    • Try
      • S(H);CHECK
      • Refutation
        • K(e);S_FLIGHT,XP(I)
  • Actual
    • R(E);
    • Threat
      • R1(E),XP(g)
    • Vars
      • K(e);N_GUARD,S_FLIGHT,XR(E)::QAR2(C)
      • K(e);P_SPINP(f),S_FLIGHT,XP(I)::R1(E),XP(g)
      • B(h);SBLOCK,XR(E)::B(A)+K(D)
      • S(j);SBLOCK,XR(E)::B(A)+K(D)
      • P(f);SBLOCK,XB(F)::S(H)
      • P(f);SBLOCK::QAB1(C)
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