MESON Chess Problem Database

Problem Display
PID: 83535 (1b6/qb5Q/rN2p3/R1nNPRP1/4k1p1/2P5/4B3/6K1 w - - 0 1)

Ellerman, Arnoldo

England, 1920

1b6/qb5Q/rN2p3/R1nNPRP1/4k1p1/2P5/4B3/6K1

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe5
      • 2.Rf1#
      • 2.Rf2#
      • 2.Rf3#
      • 2.Rf4#
      • 2.Rf6#
      • 2.Rf7#
      • 2.Rf8#
  • Keys
    • 1.Sc4!
      • threat
        • 2.Sf6#
      • 1...Sb3+
        • 2.Rf2#
      • 1...Sd3+
        • 2.Rf2#
      • 1...Sa4+
        • 2.Rf2#
      • 1...Sd7+
        • 2.Rf2#
      • 1...Kxd5
        • 2.Qh1#
      • 1...Bxd5
        • 2.Rf7#
      • 1...Bxe5
        • 2.Rxe5#
      • 1...exd5
        • 2.Rf6#
      • 1...exf5
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Actual
    • S(I);
    • Threat
      • S(E)
    • Vars
      • S(c);CHECK::QAB(J)+R(G)
      • K(a);P_SPINS(c),S_FLIGHT,XS(E)::QAB(J)
      • B(g);SBLOCK,XS(E)::QAB(J)+R(G)
      • B(h);OGATE,XP(F)::QAB(J)+R(G),DCHECK,XB(h)
      • P(e);SBLOCK,XS(E)::QAB(J)+R(G)
      • P(e);P_SPINP(e),SBLOCK,XR(G)::QAB(J)
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