MESON Chess Problem Database

Problem Display
PID: 110211 (8/3P1B2/2P1ppRp/4Nkb1/2K1RppQ/3P3b/8/3N4 w - - 0 1)

Labai, Zoltan

Brabec-50 JT, 1988

8/3P1B2/2P1ppRp/4Nkb1/2K1RppQ/3P3b/8/3N4

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bf1
      • 2.Qxg4#
    • 1...Bg2
      • 2.Qxg4#
    • 1...g3
      • 2.Qxh3#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Sd4#
      • 1...gxf3
        • 2.Qxh3#
      • 1...e5!
    • 1.Rxg5+?
      • 1...hxg5
        • 2.Bg6#
        • 2.Qh7#
      • 1...fxg5!
    • 1.Rxf6+?
      • 1...Bxf6
        • 2.Bg6#
      • 1...Kxf6!
    • 1.Rxh6?
      • threat
        • 2.Bg6#
      • 1...fxe5
        • 2.Bxe6#
      • 1...Bxh4!
    • 1.Qxg5+?
      • 1...fxg5
        • 2.Bxe6#
      • 1...hxg5!
  • Keys
    • 1.Qh5!
      • 1...fxe5
        • 2.Bxe6#
      • 1...f3
        • 2.Se3#
      • 1...Bf1
        • 2.Qxg4#
      • 1...Bg2
        • 2.Qxg4#
      • 1...g3
        • 2.Qxh3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD,P_PINP(B)::QAB1(E),XP(c)
    • B(a);N_GUARD::QAB1(E),XP(c)
    • P(c);OGATEB::QAB(E),XB(a)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • P(c);OGATEB,XS(F)::QAB(E),XB(a)
      • Refutation
        • P(f);
    • Try
      • R(H);CHECK,XB(e)
      • Refutation
        • P(g);XR(H)
    • Try
      • R(H);CHECK,XP(g)
      • Vars
        • B(e);XR(H)::B(J)
      • Refutation
        • K(d);P-FLIGHT,P_SPINB(e),XR(H)
    • Try
      • R(H);XP(h)
      • Threat
        • B(J)
      • Vars
        • P(g);XS(F)::B(J),XP(f)
      • Refutation
        • B(e);XQ(E)
    • Try
      • Q(E);CHECK,XB(e)
      • Vars
        • P(g);XQ(E)::B(J),XP(f)
      • Refutation
        • P(h);XQ(E)
  • Actual
    • Q(E);P_PINB(e)
    • Vars
      • P(g);XS(F)::B(J),XP(f)
      • P(b);N_GUARD::S(A)
      • B(a);N_GUARD,P_PINP(B)::QAB1(E),XP(c)
      • B(a);N_GUARD::QAB1(E),XP(c)
      • P(c);OGATEB::QAB(E),XB(a)
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