MESON Chess Problem Database

Problem Display
PID: 31778 (1b2nQ2/8/2r2n2/1pBkNBRN/5P2/1P3P2/8/4K3 w - - 0 1)

May, Willy Paul

Schach-Express, 1948

1b2nQ2/8/2r2n2/1pBkNBRN/5P2/1P3P2/8/4K3

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.fxe4#
  • Tries
    • 1.Be4+?
      • 1...Ke6
        • 2.Qe7#
        • 2.Qf7#
      • 1...Sxe4!
    • 1.Be6+?
      • 1...Kxe6
        • 2.Qf7#
      • 1...Rxe6!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Sb4#
      • 1...Re6+
        • 2.Be4#
      • 1...Rxc5
        • 2.Qxc5#
      • 1...Bxf4
        • 2.Shxf4#
      • 1...Rd6
        • 2.Bd7#
      • 1...Bd6
        • 2.Qf7#
      • 1...Sd6
        • 2.Sxf6#
      • 1...b4
        • 2.Sxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • S(d);OGATE::P(C),XS(d)
  • Tries
    • Try
      • B(G);CHECK
      • Refutation
        • S(d);XB(G)
    • Try
      • B(G);CHECK
      • Vars
        • K(b);S_FLIGHT,XB(G)::QAB1(J)
      • Refutation
        • R(c);P_PINS(F),XB(G)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • R(c);CHECK,SBLOCK::R(H)+B(G),DCHECK
      • R(c);OGATE,XB(E)::QAR1(J),XR(c)
      • B(e);XP(D)::S(I),XB(e)
      • R(c);S_CUTB(e)::R(H)+B(G)
      • B(e);S_CUTR(c)::QAB(J)
      • S(f);N_GUARD,S_CUTR(c)::S(I),XS(d)
      • P(a);::S(F),XP(a)
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Developed and maintained by Brian Stephenson.
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