MESON Chess Problem Database

Problem Display
PID: 88109 (5Q2/1p2p2b/2pn1b2/P1k1n2R/3N1Nq1/PPr2Bp1/2R2B2/K7 w - - 0 1)

Zidek, Alexander

The Problemist, 1996

5Q2/1p2p2b/2pn1b2/P1k1n2R/3N1Nq1/PPr2Bp1/2R2B2/K7

#2

11 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh5
      • 2.Sfe6#
    • 1...Qe6
      • 2.Sfxe6#
    • 1...Qh4
      • 2.Sfe6#
    • 1...Qg5
      • 2.Sfe6#
    • 1...Qg6
      • 2.Sfe6#
    • 1...Qg7
      • 2.Sfe6#
    • 1...Rc4
      • 2.b4#
    • 1...Bh4
      • 2.Rxe5#
    • 1...Bd3
      • 2.Sxd3#
    • 1...Bg8
      • 2.Sd3#
    • 1...b5
      • 2.Sde6#
    • 1...e6
      • 2.Rxc3#
  • Keys
    • 1.Qd8!
      • threat
        • 2.Qb6#
      • 1...Sc4
        • 2.b4#
      • 1...Se4
        • 2.Sd3#
      • 1...Sb5
        • 2.Sde6#
      • 1...Sf5
        • 2.Sfe6#
      • 1...Sf7
        • 2.Rxc3#
      • 1...Sc8
        • 2.Rxc3#
      • 1...Se8
        • 2.Rxc3#
      • 1...b6
        • 2.Qxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 12
  • Sets
    • Q(c);N_GUARD,N_SPINS(e),XR(J)::S(H)
    • Q(c);N_GUARD::S(H),XQ(c)
    • Q(c);N_GUARD::S(H)
    • Q(c);N_GUARD,N_SPINS(e)::S(H)
    • R(a);::P(E)
    • B(h);N_GUARD::R(J),XS(e)
    • B(k);N_GUARD::S(H),XB(k)
    • B(k);N_GUARD::S(H)
    • P(i);SBLOCK::B(C)+S(G),DCHECK
    • P(j);S_CUTS(g)::R(B),XR(a)
  • Actual
    • Q(K);
    • Threat
      • QAB1(K)
    • Vars
      • S(g);N_SPINR(a),SBLOCK::P(E)
      • S(g);S_CUTB(k)::S(H)
      • S(g);SBLOCK::B(C)+S(G),DCHECK
      • S(g);N_SPINS(e),S_CUTQ(c)::S(H)
      • S(g);N_GUARD::R(B),XR(a)
      • P(i);::QAB1(K),XP(i)
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