MESON Chess Problem Database

Problem Display
PID: 258717 (5N2/5p1R/8/n2kPN2/BPrP2p1/1Pb5/3pQ1K1/8 w - - 0 1)

Labai, Zoltan

3rd Comm., Hlas l'udu, 1971

(First published on Wed Apr 21 1971)

5N2/5p1R/8/n2kPN2/BPrP2p1/1Pb5/3pQ1K1/8

#2

10 + 7

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Se7#
    • 1...Bxd4
      • 2.Se7#
    • 1...Sc6
      • 2.bxc4#
    • 1...Sb7
      • 2.bxc4#
    • 1...g3
      • 2.Qf3#
    • 1...f6
      • 2.Rd7#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Qe4#
      • 1...Kxd4
        • 2.Qe4#
      • 1...Rxd4
        • 2.Qb5#
      • 1...f5!
    • 1.Se6?
      • threat
        • 2.Sf4#
      • 1...Rxd4
        • 2.Sc7#
      • 1...fxe6
        • 2.Rd7#
      • 1...Kxe6!
  • Keys
    • 1.Sg3!
      • threat
        • 2.Qe4#
      • 1...Kxd4
        • 2.Qe4#
      • 1...Rxd4
        • 2.Qb5#
      • 1...f5
        • 2.Rd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(c);SBLOCK,XP(F)::S(H)
    • B(b);SBLOCK,XP(F)::S(H)
    • S(e);N_GUARD::P(C),XR(c)
    • P(d);N_GUARD::QAB(A)
    • P(g);OGATE::R(I)
  • Tries
    • Try
      • S(H);
      • Threat
        • QAB1(A)
      • Vars
        • K(f);P-FLIGHT,XP(F)::QAR1(A)
        • R(c);OGATE,SBLOCK,XP(F)::QAR2(A)
      • Refutation
        • P(g);
    • Try
      • S(J);
      • Threat
        • S(J)
      • Vars
        • R(c);N_GUARD,XP(F)::S(J)
        • P(g);OGATE,SBLOCK,XS(J)::R(I)
      • Refutation
        • K(f);S_FLIGHT,XS(J)
  • Actual
    • S(H);
    • Threat
      • QAB1(A)
    • Vars
      • K(f);P-FLIGHT,XP(F)::QAR1(A)
      • R(c);OGATE,SBLOCK,XP(F)::QAR2(A)
      • P(g);OGATE::R(I)
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