MESON Chess Problem Database

Problem Display
PID: 216117 (K6Q/3RpB2/N2nPp2/1p1k4/p1p1pRP1/4P3/Nn6/Br1r4 w - - 0 1)

Labai, Zoltan

Svitek, Miroslav

2nd HM., Sachmatija, 2020

K6Q/3RpB2/N2nPp2/1p1k4/p1p1pRP1/4P3/Nn6/Br1r4

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.S2b4#
  • Tries
    • 1.Qh5+?
      • 1...Kc6
        • 2.Qc5#
      • 1...f5!
    • 1.Qc8?
      • threat
        • 2.Rf5#
        • 2.Qc5#
      • 1...Rf1
        • 2.Qc5#
      • 1...Sd3
        • 2.Qb7#
      • 1...f5
        • 2.Rxf5#
        • 2.Qc5#
      • 1...Ke5!
  • Keys
    • 1.Qb8!
      • threat
        • 2.Qxb5#
      • 1...Ke5
        • 2.Rf5#
      • 1...Kc6
        • 2.S2b4#
      • 1...Sd3
        • 2.Qb7#
      • 1...b4
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(j);::S(B)
  • Tries
    • Try
      • Q(K);CHECK
      • Vars
        • K(h);N_SPINS(i),OGATE,S_FLIGHT::QAR1(K)
      • Refutation
        • P(j);P_SPINP(j)
    • Try
      • Q(K);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);::QAR1(K)
        • S(c);::QAB(K)
      • Refutation
        • K(h);N_SPINS(i),P-FLIGHT,P_SPINS(c)
  • Actual
    • Q(K);
    • Threat
      • QAR2(K),XP(g)
    • Vars
      • K(h);N_SPINS(i),P-FLIGHT,P_SPINS(c)::R1(D)
      • K(h);N_SPINS(i),S_FLIGHT::S(B)
      • S(c);::QAB(K)
      • P(g);::QAR2(K)
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