MESON Chess Problem Database

Problem Display
PID: 237431 (K1BnRQn1/2p2p1q/1Npp1k1P/4pN2/7P/8/4p3/2B3R1 w - - 0 1)

Labai, Zoltan

Comm., Mat 64, 2002

K1BnRQn1/2p2p1q/1Npp1k1P/4pN2/7P/8/4p3/2B3R1

#2

10 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf5
      • 2.Qg7#
    • 1...Qg7
      • 2.Qxg7#
    • 1...Sxh6
      • 2.Qe7#
    • 1...Se7
      • 2.Qxe7#
    • 1...e4
      • 2.Bb2#
    • 1...c5
      • 2.Sd5#
  • Tries
    • 1.Se3?
      • threat
        • 2.Sd7#
      • 1...Qf5
        • 2.Qg7#
      • 1...Se7
        • 2.Qxe7#
      • 1...cxb6!
    • 1.Sg3?
      • threat
        • 2.Sh5#
      • 1...Qxh6
        • 2.Se4#
      • 1...Qf5
        • 2.Qg7#
      • 1...Qg6
        • 2.Sd7#
      • 1...Se6
        • 2.Rxe6#
      • 1...Kg6!
    • 1.Sg7?
      • threat
        • 2.Sd7#
        • 2.Sh5#
      • 1...Qxh6
        • 2.Sd7#
      • 1...Qxg7
        • 2.Qxg7#
      • 1...cxb6
        • 2.Sh5#
      • 1...Qg6
        • 2.Sd7#
      • 1...Se6
        • 2.Sd7#
        • 2.Rxe6#
      • 1...Qf5!
    • 1.Rg5?
      • threat
        • 2.Sd7#
      • 1...Qxf5
        • 2.Qg7#
      • 1...Se7
        • 2.Qxe7#
      • 1...cxb6!
  • Keys
    • 1.Se7!
      • threat
        • 2.Bg5#
      • 1...Qxh6
        • 2.Sxg8#
      • 1...Sxe7
        • 2.Qxe7#
      • 1...e4
        • 2.Bb2#
      • 1...Qf5
        • 2.Sxg8#
        • 2.Qg7#
      • 1...Qg6
        • 2.Rxg6#
      • 1...Qg7
        • 2.Qxg7#
      • 1...Se6
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(h);N_GUARD,XS(D)::QAB1(J)
    • Q(h);N_GUARD::QAB1(J),XQ(h)
    • S(j);N_GUARD,XP(F)::QAB1(J)
    • S(j);N_GUARD::QAB1(J),XS(j)
    • P(b);OGATEB::B(A)
    • P(c);N_GUARD::S(E)
  • Tries
    • Try
      • S(D);
      • Threat
        • S(E)
      • Vars
        • Q(h);N_GUARD::QAB1(J)
        • S(j);N_GUARD::QAB1(J),XS(j)
      • Refutation
        • P(f);XS(E)
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • Q(h);N_GUARD,XP(F)::S(D)
        • Q(h);N_GUARD::QAB1(J)
        • Q(h);SBLOCK::S(E)
        • S(i);N_GUARD::R1(I),XS(i)
      • Refutation
        • K(e);N_SPINP(g),P-FLIGHT
    • Try
      • S(D);
      • Threat
        • DUALS(2)
      • Vars
        • Q(h);XP(F)::S(E)
        • Q(h);OGATE,XS(D)::QAB1(J),XQ(h)
        • P(f);XS(E)::S(D)
        • Q(h);::S(E)
      • Refutation
        • Q(h);
    • Try
      • R(B);
      • Threat
        • S(E)
      • Vars
        • Q(h);N_GUARD,XS(D)::QAB1(J)
        • S(j);N_GUARD::QAB1(J),XS(j)
      • Refutation
        • P(f);XS(E)
  • Actual
    • S(D);
    • Threat
      • B(A)
    • Vars
      • Q(h);N_GUARD,XP(F)::S(D),XS(j)
      • S(j);OGATE,XS(D)::QAB1(J),XS(j)
      • P(b);OGATEB::B(A)
      • Q(h);N_GUARD::R1(B),XQ(h)
      • Q(h);N_GUARD::QAB1(J),XQ(h)
      • S(i);SBLOCK::S(E)
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