MESON Chess Problem Database

Problem Display
PID: 44854 (3R2B1/1n3NnK/2P1Np1p/4pk2/2Q2br1/3PpP2/8/6rq w - - 0 1)

Eddy, Edwin John

Recomm., BCF 043. Ty., 1942-1943

3R2B1/1n3NnK/2P1Np1p/4pk2/2Q2br1/3PpP2/8/6rq

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Sxh6#
    • 1...Bg3
      • 2.Qxg4#
      • 2.fxg4#
    • 1...Bg5
      • 2.Sxg7#
    • 1...Sa5
      • 2.Sd6#
    • 1...Sc5
      • 2.Sd6#
    • 1...Sd6
      • 2.Sxd6#
    • 1...Sxd8
      • 2.Sd6#
    • 1...Sxe6
      • 2.Qe4#
    • 1...e4
      • 2.Sd4#
      • 2.Qxe4#
      • 2.dxe4#
  • Tries
    • 1.cxb7?
      • threat
        • 2.Sd6#
      • 1...Sxe6
        • 2.Qe4#
      • 1...e4
        • 2.Sd4#
        • 2.Qxe4#
        • 2.dxe4#
      • 1...Se8!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Sd4#
      • 1...Kxe6
        • 2.Rxe5#
      • 1...Sxe6
        • 2.Qe4#
      • 1...Bh2
        • 2.Sxh6#
      • 1...Bg3
        • 2.Qxg4#
      • 1...Bg5
        • 2.Sxg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(d);N_GUARD,S_CUTQ(b)::S(F),XP(i)
    • B(d);S_CUTR(e)::S(E),XS(k)
    • S(j);N_GUARD::S(F)
    • S(j);N_GUARD::S(F),XS(j)
    • S(j);N_GUARD,XR(H)::S(F)
    • S(k);SBLOCK,XS(E)::QAB1(C)
  • Tries
    • Try
      • P(D);XS(j)
      • Threat
        • S(F)
      • Vars
        • S(k);SBLOCK,XS(E)::QAB1(C)
      • Refutation
        • S(k);
  • Actual
    • R(H);P_PINP(f)
    • Threat
      • S(E)
    • Vars
      • K(g);N_SPINP(f),S_FLIGHT,XS(E)::QAB(C)+R(H),DCHECK,XP(f)
      • S(k);SBLOCK,XS(E)::QAB1(C)
      • B(d);N_GUARD,S_CUTQ(b)::S(F),XP(i)
      • B(d);OGATE::QAB1(C),XR(e)
      • B(d);S_CUTR(e)::S(E),XS(k)
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