MESON Chess Problem Database

Problem Display
PID: 143027 (1bNR4/r2q4/2p5/2Nk1PrR/3Pb1Qp/1PP2pnK/8/8 w - - 0 1)

Wetzel, P

3rd Prize, diagrammes 01. Composition Exercise, 1973

1bNR4/r2q4/2p5/2Nk1PrR/3Pb1Qp/1PP2pnK/8/8

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Sb6#
    • 1...Rxf5
      • 2.Qg8#
    • 1...Rxh5
      • 2.Qg8#
    • 1...Rg8
      • 2.Qxg8#
    • 1...Bb1
      • 2.c4#
    • 1...Bc2
      • 2.c4#
    • 1...Bxf5
      • 2.c4#
    • 1...Bd6
      • 2.Sb6#
    • 1...Sf1
      • 2.Qxe4#
    • 1...Sh1
      • 2.Qxe4#
    • 1...Se2
      • 2.Qxe4#
    • 1...Sxf5
      • 2.Qxe4#
    • 1...Sxh5
      • 2.Qxe4#
  • Tries
    • 1.Rxd7+?
      • 1...Bd6
        • 2.Sb6#
        • 2.Se7#
        • 2.Rxd6#
      • 1...Rxd7!
  • Keys
    • 1.f6!
      • threat
        • 2.Qe6#
      • 1...Rf5
        • 2.Qg8#
      • 1...Bf5
        • 2.c4#
      • 1...Bd6
        • 2.Sb6#
      • 1...Sf5
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 9
  • Sets
    • Q(i);::S(I)
    • R(f);OGATE,P_SPINR(f),XP(G)::QAB(E)
    • R(f);OGATE,XR(H)::QAB(E)
    • R(f);OGATE::QAB(E),XR(f)
    • B(c);::P(B)
    • B(c);P_PINQ(E),XP(G)::P(B)
    • B(j);N_SPINQ(i),SBLOCK::S(I)
    • S(b);N_GUARD::QAB1(E),XB(c)
    • S(b);N_GUARD,XP(G)::QAB1(E),XB(c)
    • S(b);N_GUARD,XR(H)::QAB1(E),XB(c)
  • Tries
    • Try
      • R(J);CHECK,XQ(i)
      • Refutation
        • R(h);XR(J)
  • Actual
    • P(G);P_PINR(f),P_SPINQ(E)
    • Threat
      • QAB1(E)
    • Vars
      • R(f);N_PINQ(E)::QAB(E)
      • B(c);N_SPINR(f)::P(B)
      • B(j);N_SPINQ(i),SBLOCK::S(I)
      • S(b);N_PINQ(E),N_SPINR(f)::QAB1(E),XB(c)
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