MESON Chess Problem Database

Problem Display
PID: 166643 (K6B/6R1/Q1p4p/p1pbn3/3k1n2/rpN2p1r/3P3b/2N2B2 w - - 0 1)

Labai, Zoltan

StrateGems, 2016

K6B/6R1/Q1p4p/p1pbn3/3k1n2/rpN2p1r/3P3b/2N2B2

#2

8 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Sg4
      • 2.Rxg4#
    • 1...Sg6
      • 2.Rxg6#
    • 1...Sd7
      • 2.Rxd7#
    • 1...Sf7
      • 2.Rxf7#
  • Tries
    • 1.Rg4?
      • threat
        • 2.Qd3#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Be4
        • 2.Qc4#
      • 1...f2
        • 2.S1e2#
      • 1...c4!
  • Keys
    • 1.Rd7!
      • threat
        • 2.Qc4#
      • 1...c4
        • 2.Qxc4#
      • 1...Ra4
        • 2.Sxb3#
      • 1...Se2
        • 2.Qd3#
      • 1...Sd3
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • S(k);OGATEB::B(H)+R(F),XS(k)
  • Tries
    • Try
      • R(F);P_PINS(g)
      • Threat
        • QAR1(E)
      • Vars
        • B(j);N_GUARD::QAR1(E),XB(j)
        • B(j);N_GUARD,N_SPINS(g),P_SPINS(k)::QAR1(E)
        • P(d);N_GUARD::S(A)
      • Refutation
        • P(i);
  • Actual
    • R(F);P_PINB(j),P_PINS(k)
    • Threat
      • QAR1(E)
    • Vars
      • P(i);::QAR1(E),XP(i)
      • R(b);N_GUARD::S(A),XP(c)
      • S(g);N_GUARD::QAR1(E)
      • S(g);N_GUARD::QAR1(E),XS(g)
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