MESON Chess Problem Database

Problem Display
PID: 247205 (4N3/1bpB1PpQ/n1p2p1R/3kp3/p2p1P2/8/4PK2/2RN1n2 w - - 0 1)

Labai, Zoltan

Uralski Problemist, 2010

4N3/1bpB1PpQ/n1p2p1R/3kp3/p2p1P2/8/4PK2/2RN1n2

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Qxd3#
    • 1...exf4
      • 2.Qf5#
    • 1...e4
      • 2.Qf5#
  • Tries
    • 1.Sxf6+?
      • 1...Kd6
        • 2.f8Q#
        • 2.f8B#
      • 1...gxf6!
    • 1.f8Q?
      • threat
        • 2.Qf7#
        • 2.Qfg8#
      • 1...exf4
        • 2.Qf5#
      • 1...d3
        • 2.Qxd3#
      • 1...g6
        • 2.Sxf6#
      • 1...Sc5
        • 2.Sxc7#
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...f5!
  • Keys
    • 1.Qd3!
      • threat
        • 2.e4#
      • 1...exf4
        • 2.Qf5#
      • 1...Sd2
        • 2.Se3#
      • 1...Se3
        • 2.Sxe3#
      • 1...Sg3
        • 2.Se3#
      • 1...Sc5
        • 2.Sc3#
      • 1...e4
        • 2.Qc4#
      • 1...f5
        • 2.Be6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATEB::QAR2(I),XP(c)
    • P(e);OGATEB,XP(E)::QAR2(I)
    • P(e);OGATEB::QAR2(I)
  • Tries
    • Try
      • S(J);CHECK,XP(h)
      • Vars
        • K(d);P-FLIGHT::P=Q
      • Refutation
        • P(k);XS(J)
    • Try
      • P(H);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);OGATEB,XP(E)::QAR2(I)
        • P(c);OGATEB::QAR2(I),XP(c)
        • P(k);N_GUARD::S(J),XP(h)
      • Refutation
        • P(h);
  • Actual
    • Q(I);P_PINP(c)
    • Threat
      • P(C)
    • Vars
      • P(e);OGATEB,XP(E)::QAR2(I)
      • S(a);N_GUARD::S(B)
      • S(a);N_GUARD::S(B),XS(a)
      • S(f);SBLOCK::S(B)
      • P(e);SBLOCK::QAB1(I)
      • P(h);::B(G)
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