MESON Chess Problem Database

Problem Display
PID: 110178 (2n5/bp3R2/4knP1/2Qp4/1Np2pP1/5Np1/p1pBr3/Kb1q4 w - - 0 1)

Labai, Zoltan

Sachove umeni (Ceskoslovensky sach), 1980

2n5/bp3R2/4knP1/2Qp4/1Np2pP1/5Np1/p1pBr3/Kb1q4

#2

8 + 14

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Sd4#
    • 1...Se4
      • 2.Qxd5#
    • 1...Sxg4
      • 2.Qxd5#
    • 1...Sh5
      • 2.Qxd5#
    • 1...Sd7
      • 2.Qxd5#
    • 1...Sh7
      • 2.Qxd5#
    • 1...Se8
      • 2.Qxd5#
    • 1...Sg8
      • 2.Qxd5#
    • 1...Sb6
      • 2.Re7#
      • 2.Qe7#
    • 1...Se7
      • 2.Rxe7#
      • 2.Qxe7#
    • 1...d4
      • 2.Sxd4#
      • 2.Sg5#
  • Tries
    • 1.Bxf4?
      • threat
        • 2.Sg5#
      • 1...Qd4+
        • 2.Sxd4#
      • 1...Se7
        • 2.Rxe7#
        • 2.Qd6#
        • 2.Qxe7#
      • 1...Se4
        • 2.Qxc8#
      • 1...Sh7
        • 2.Qxc8#
      • 1...Re5!
    • 1.Qxc8+?
      • 1...Sd7
        • 2.Qxd7#
      • 1...Kd6!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Sg5#
      • 1...Bd4+
        • 2.Sxd4#
      • 1...Re5
        • 2.Qxe5#
      • 1...Se4
        • 2.Qe5#
        • 2.Qd7#
      • 1...Sh7
        • 2.Qd7#
      • 1...Sd6
        • 2.Re7#
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(e);SBLOCK::S(C)
    • S(k);N_GUARD::QAB1(F),XP(i)
    • S(k);N_GUARD,XP(E)::QAB1(F),XP(i)
  • Tries
    • Try
      • B(B);XP(h)
      • Threat
        • S(C)
      • Vars
        • Q(b);CHECK,N_GUARD::S(C),XQ(b)
        • S(k);N_GUARD::QAB(F),XS(n)
      • Refutation
        • R(e);
    • Try
      • Q(F);CHECK,XS(n)
      • Vars
        • S(k);N_GUARD,P_SPINS(k)::QAB1(F),XS(k)
      • Refutation
        • K(j);P-FLIGHT
  • Actual
    • Q(F);
    • Threat
      • S(C)
    • Vars
      • B(l);CHECK,N_GUARD::S(C),XB(l)
      • R(e);N_GUARD::QAR1(F),XR(e)
      • S(k);N_GUARD::QAB1(F)
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