MESON Chess Problem Database

Problem Display
PID: 197122 (1K6/6p1/2P4b/Qp1ppp2/R1P1kP1R/2P4N/b2PPp1q/5n2 w - - 0 1)

Ersek, Tibor

Sachova skladba, 2008

1K6/6p1/2P4b/Qp1ppp2/R1P1kP1R/2P4N/b2PPp1q/5n2

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf4
      • 2.Sxf2#
    • 1...Qh1
      • 2.Sxf2#
    • 1...Bxf4
      • 2.Sg5#
    • 1...Bg5
      • 2.Sxg5#
    • 1...Se3
      • 2.d3#
    • 1...bxa4
      • 2.Qxd5#
    • 1...b4
      • 2.Qxd5#
  • Tries
    • 1.Qxb5?
      • threat
        • 2.Qxd5#
      • 1...Bxc4
        • 2.Qb1#
      • 1...dxc4
        • 2.Qxe5#
      • 1...Se3
        • 2.d3#
      • 1...d4
        • 2.Qd5#
        • 2.Qxe5#
      • 1...Sxd2!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qxe5#
      • 1...Qxf4
        • 2.Sxf2#
      • 1...Bxf4
        • 2.Sg5#
      • 1...exf4
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • Q(d);N_GUARD,P_SPINQ(d),XP(G)::S(D),XP(c)
    • Q(d);N_GUARD::S(D),XP(c)
    • B(j);N_GUARD,P_SPINB(j),XP(G)::S(D)
    • B(j);N_GUARD::S(D),XB(j)
    • S(a);SBLOCK::P(A)
    • P(f);OGATE,XR(E)::QAB1(I),XP(g)
    • P(f);OGATE::QAB1(I),XP(g)
  • Tries
    • Try
      • Q(I);XP(f)
      • Threat
        • QAB1(I),XP(g)
      • Vars
        • B(b);N_GUARD,P_SPINB(b),XP(F)::QAB(I)
        • P(g);OGATE,P_SPINP(g),XP(F)::QAR1(I),XP(h)
        • S(a);SBLOCK::P(A)
      • Refutation
        • S(a);XP(A)
  • Actual
    • Q(I);
    • Threat
      • QAR1(I),XP(h)
    • Vars
      • Q(d);N_GUARD,P_SPINQ(d),XP(G)::S(D),XP(c)
      • B(j);N_GUARD,P_SPINB(j),XP(G)::S(D)
      • P(h);OGATEB,P_SPINP(h),XP(G)::QAR(I)
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