MESON Chess Problem Database

Problem Display
PID: 109864 (K5B1/5N2/1bQp1B2/1p1r1pP1/nR1pk3/1p2P2n/4P1Pq/3N4 w - - 0 1)

Brabec, Juraj

Hlas l'udu, 1961

K5B1/5N2/1bQp1B2/1p1r1pP1/nR1pk3/1p2P2n/4P1Pq/3N4

#2

11 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Sxd6#
    • 1...Qh1
      • 2.Sxd6#
    • 1...Qxg2
      • 2.Sxd6#
    • 1...Ba5
      • 2.Rxd4#
    • 1...Bc7
      • 2.Rxd4#
    • 1...Bd8
      • 2.Rxd4#
    • 1...Sf4
      • 2.Sxd6#
    • 1...Sxg5
      • 2.Sxg5#
    • 1...Sc5
      • 2.Rxd4#
    • 1...b2
      • 2.Qc2#
    • 1...f4
      • 2.Sxd6#
      • 2.Bh7#
  • Tries
    • 1.Qe8+?
      • 1...Re5
        • 2.Sxd6#
      • 1...Qe5!
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qb1#
      • 1...Rc5
        • 2.Rxd4#
      • 1...Re5
        • 2.Sxd6#
      • 1...Sf2
        • 2.Sxf2#
      • 1...Sf4
        • 2.Sf2#
      • 1...Sb2
        • 2.Sc3#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sc5
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 8
  • Sets
    • Q(a);N_GUARD::S(I),XP(k)
    • Q(a);N_GUARD,XP(C)::S(I),XP(k)
    • B(j);N_GUARD::R1(E),XP(e)
    • S(c);S_CUTQ(a)::S(I),XP(k)
    • S(c);XP(F)::S(I),XS(c)
    • S(d);S_CUTB(j)::R1(E),XP(e)
    • P(b);N_GUARD::QAB(G)
  • Tries
    • Try
      • Q(G);CHECK,N_PINR(h)
      • Vars
        • R(h);P_SPINR(h)::S(I),XP(k)
      • Refutation
        • Q(a);P_SPINQ(a)
  • Actual
    • Q(G);N_PINR(h)
    • Threat
      • QAB(G)
    • Vars
      • R(h);N_GUARD,S_CUTB(j)::R1(E),XP(e)
      • R(h);N_GUARD,S_CUTQ(a)::S(I),XP(k)
      • S(c);N_GUARD::S(A),XS(c)
      • S(c);N_GUARD::S(A)
      • S(d);N_GUARD::S(A)
      • S(d);N_GUARD::S(A),XS(d)
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