MESON Chess Problem Database

Problem Display
PID: 266538 (3B2qn/3pp1r1/pP1k2p1/n2N2R1/BP1NP3/3R2K1/b1rP4/8 w - - 0 1)

Fleck, Ferenc

Die Schwalbe, 1950

3B2qn/3pp1r1/pP1k2p1/n2N2R1/BP1NP3/3R2K1/b1rP4/8

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Bc7#
    • 1...Rxd2
      • 2.Bc7#
    • 1...Rc7
      • 2.Bxc7#
    • 1...Bc4
      • 2.Bc7#
    • 1...Bxd5
      • 2.e5#
    • 1...Sc4
      • 2.Bc7#
    • 1...Sc6
      • 2.Bc7#
    • 1...Sf7
      • 2.Bxe7#
  • Keys
    • 1.Sc7!
      • threat
        • 2.e5#
      • 1...Rxc7
        • 2.Bxc7#
      • 1...Qd5
        • 2.Se8#
      • 1...Qe6
        • 2.Se8#
      • 1...Rc5
        • 2.bxc5#
      • 1...Sc4
        • 2.Sde6#
      • 1...Sc6
        • 2.Sdb5#
      • 1...Sf7
        • 2.Sb3#
      • 1...e5
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD::B(K)
    • R(b);N_GUARD,XP(A)::B(K)
    • R(b);N_GUARD::B(K),XR(b)
    • B(a);S_CUTR(b)::B(K)
    • B(a);SBLOCK,XS(H)::P(G)
    • S(c);S_CUTR(b)::B(K)
    • S(k);S_CUTR(i)::B(K),XP(h)
  • Actual
    • S(H);
    • Threat
      • P(G)
    • Vars
      • R(b);OGATE,XS(H)::B(K),XR(b)
      • Q(j);N_GUARD::S(H)
      • R(b);OGATE::P(E),XR(b)
      • S(c);S_CUTB(a)::R(B)+S(F)
      • S(c);SBLOCK::R(B)+S(F),DCHECK
      • S(k);S_CUTQ(j)::R(B)+S(F)
      • P(h);SBLOCK::R(B)+S(F),DCHECK
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