MESON Chess Problem Database

Problem Display
PID: 45305 (3n2Q1/1p2R2p/5P1q/3P1kpn/R4Nb1/5p1p/K1P1P3/BB6 w - - 0 1)

Buchwald, Julius

2nd Prize, BCF 048. Ty., 1944-1945

3n2Q1/1p2R2p/5P1q/3P1kpn/R4Nb1/5p1p/K1P1P3/BB6

#2

11 + 10

5759 Selected Compositions of Julius Buchwald 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Qf8
      • 2.Qxh7#
    • 1...Qxf6
      • 2.c3#
    • 1...Sxf4
      • 2.e4#
    • 1...Sxf6
      • 2.Re5#
    • 1...Sc6
      • 2.Qe6#
      • 2.Qc8#
    • 1...Se6
      • 2.Qxe6#
    • 1...Sf7
      • 2.Qc8#
    • 1...gxf4
      • 2.c4#
  • Tries
    • 1.Re6?
      • threat
        • 2.c3#
      • 1...Sxf4
        • 2.e4#
      • 1...Sxf6
        • 2.Re5#
      • 1...Sxe6
        • 2.Qxe6#
      • 1...Sg3!
    • 1.Qf7?
      • threat
        • 2.Re5#
        • 2.c3#
      • 1...Sxf4
        • 2.Re5#
        • 2.e4#
      • 1...gxf4
        • 2.Re5#
      • 1...Sg3
        • 2.Re5#
      • 1...Sc6
        • 2.Qe6#
        • 2.c3#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sxf7!
    • 1.Qxh7+?
      • 1...Qg6
        • 2.Qxg6#
      • 1...Qxh7!
    • 1.e3?
      • threat
        • 2.c4#
      • 1...Sxf4
        • 2.e4#
      • 1...Sxf6
        • 2.Re5#
      • 1...Sg3!
  • Keys
    • 1.d6!
      • threat
        • 2.Qd5#
      • 1...Qxf6
        • 2.c3#
      • 1...Sxf4
        • 2.e4#
      • 1...Sxf6
        • 2.Re5#
      • 1...gxf4
        • 2.c4#
      • 1...Sc6
        • 2.Qe6#
        • 2.Qc8#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sf7
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • Q(g);N_GUARD::QAB(K),XP(i)
    • Q(g);SBLOCK,XP(I)::B(B)+P(D)
    • S(f);SBLOCK,XS(G)::P(E)
    • S(f);SBLOCK,XP(I)::R1(J)
    • S(j);N_GUARD::QAB1(K),XS(j)
    • S(j);OGATE::QAB(K)
    • P(e);SBLOCK,XS(G)::B(B)+P(D)
  • Tries
    • Try
      • R(J);
      • Threat
        • B(B)+P(D)
      • Vars
        • S(f);SBLOCK,XS(G)::P(E)
        • S(f);SBLOCK,XP(I)::R1(J)
        • S(j);OGATE,XR(J)::QAB1(K),XS(j)
      • Refutation
        • S(f);
    • Try
      • Q(K);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);XS(G)::R1(J)
        • S(f);::R1(J)
        • S(j);N_GUARD::QAB1(K),XS(j)
      • Refutation
        • S(j);XQ(K)
    • Try
      • Q(K);CHECK,XP(i)
      • Vars
        • Q(g);N_GUARD,P_SPINQ(g)::QAB1(K),XQ(g)
      • Refutation
        • Q(g);XQ(K)
    • Try
      • P(E);
      • Threat
        • B(B)+P(D)
      • Vars
        • S(f);SBLOCK,XS(G)::P(E)
        • S(f);SBLOCK,XP(I)::R1(J)
      • Refutation
        • S(f);
  • Actual
    • P(H);
    • Threat
      • QAR2(K)
    • Vars
      • Q(g);SBLOCK,XP(I)::B(B)+P(D)
      • S(f);SBLOCK,XS(G)::P(E)
      • S(f);SBLOCK,XP(I)::R1(J)
      • P(e);SBLOCK,XS(G)::B(B)+P(D)
      • S(j);N_GUARD::QAB1(K),XS(j)
      • S(j);OGATE::QAB(K)
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