MESON Chess Problem Database

Problem Display
PID: 17874 (2B2b2/3p1n1K/1pNP2R1/1P1k2P1/4N3/1n1bQP2/1P6/1qR5 w - - 0 1)

Fleck, Ferenc

1st Prize, Polish Chess Problem Association, 1951

2B2b2/3p1n1K/1pNP2R1/1P1k2P1/4N3/1n1bQP2/1P6/1qR5

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bc4
      • 2.Sc3#
    • 1...Bxe4
      • 2.Qxb3#
    • 1...Bxd6
      • 2.Sf6#
    • 1...Sa1
      • 2.Qd4#
    • 1...Sxc1
      • 2.Qd4#
    • 1...Sd2
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sa5
      • 2.Qd4#
    • 1...Sc5
      • 2.Qd4#
    • 1...Se5
      • 2.Sb4#
    • 1...Sxg5+
      • 2.Qxg5#
    • 1...Sxd6
      • 2.Sf6#
  • Tries
    • 1.Se7+?
      • 1...Ke5
        • 2.f4#
      • 1...Bxe7!
    • 1.Bxd7?
      • threat
        • 2.Be6#
      • 1...Sxg5+
        • 2.Rxg5#
        • 2.Qxg5#
      • 1...Bxe4
        • 2.Qxb3#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sc5
        • 2.Qd4#
      • 1...Sd8!
    • 1.Rc5+?
      • 1...Sxc5
        • 2.Qd4#
      • 1...bxc5!
    • 1.Qxd3+?
      • 1...Sd4
        • 2.Qc4#
        • 2.Qxd4#
      • 1...Qxd3!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qxf7#
      • 1...Sxg5+
        • 2.Qxg5#
      • 1...Sxd6
        • 2.Qe5#
      • 1...dxc6
        • 2.Sf6#
      • 1...Sd4
        • 2.Sb4#
      • 1...Sc5
        • 2.Sc3#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sh6
        • 2.Qe5#
      • 1...Sd8
        • 2.Qe5#
        • 2.Qf5#
      • 1...Sh8
        • 2.Qe5#
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • B(c);SBLOCK::S(E)
    • B(c);OGATE,P_PINR(J),XS(E)::QAB(C),XS(b)
    • B(h);SBLOCK,XP(I)::S(E)
    • S(b);N_GUARD::QAR1(C)
    • S(b);N_GUARD,XR(A)::QAR1(C)
    • S(b);N_GUARD::QAR1(C),XS(b)
    • S(g);SBLOCK::S(H)
    • S(g);CHECK,OGATE,XP(G)::QAR(C),XS(g)
    • S(g);SBLOCK,XP(I)::S(E)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(d);P-FLIGHT::P(D)
      • Refutation
        • B(h);XS(H)
    • Try
      • B(L);XP(f)
      • Threat
        • B(L)
      • Vars
        • B(c);OGATE,P_PINR(J),XS(E)::QAB(C),XS(b)
        • S(b);N_GUARD::QAR1(C),XS(b)
        • S(b);N_GUARD::QAR1(C)
      • Refutation
        • S(g);
    • Try
      • R(A);CHECK
      • Vars
        • S(b);XR(A)::QAR1(C)
      • Refutation
        • P(e);XR(A)
    • Try
      • Q(C);CHECK,XB(c)
      • Refutation
        • Q(a);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAB(C),XS(g)
    • Vars
      • S(g);CHECK,OGATE,XP(G)::QAR(C),XS(g)
      • S(g);N_GUARD,XP(I)::QAR1(C)
      • P(f);XS(H)::S(E)
      • S(b);SBLOCK::S(H)
      • S(b);SBLOCK::S(E)
      • S(g);N_GUARD::QAR1(C),XS(g)
      • S(g);N_GUARD::QAR1(C)
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