MESON Chess Problem Database

Problem Display
PID: 271830 (6Nn/7K/4k3/7p/b1N4Q/1p6/6B1/8 w - - 0 1)

Labai, Zoltan

Svitek, Miroslav

Sachmatija, 2023

6Nn/7K/4k3/7p/b1N4Q/1p6/6B1/8

#2

5 + 5

5454 Near Snap 2026

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Bh3#
    • 1...Kf7
      • 2.Qe7#
    • 1...Bd7
      • 2.Qf6#
    • 1...Sf7
      • 2.Qh3#
  • Tries
    • 1.Kg7?
      • threat
        • 2.Qh3#
      • 1...Kf5
        • 2.Bh3#
      • 1...Kd7!
    • 1.Sb6?
      • threat
        • 2.Qf6#
      • 1...Ke5
        • 2.Qf6#
      • 1...Kd6
        • 2.Qe7#
      • 1...Kf7
        • 2.Qe7#
      • 1...Kf5!
    • 1.Sd6?
      • threat
        • 2.Qe7#
      • 1...Ke5
        • 2.Qf6#
      • 1...Kxd6
        • 2.Qe7#
      • 1...Kd7
        • 2.Qe7#
      • 1...Sg6!
    • 1.Bh3+?
      • 1...Kf7
        • 2.Qe7#
      • 1...Kd5!
    • 1.Qe4+?
      • 1...Kf7
        • 2.Qe7#
      • 1...Kd7!
    • 1.Qxh5?
      • threat
        • 2.Bh3#
        • 2.Qd5#
      • 1...Sg6
        • 2.Qd5#
      • 1...Bc6
        • 2.Bh3#
      • 1...Kd7!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qf6#
      • 1...Kxe5
        • 2.Qf6#
      • 1...Kf5
        • 2.Qf6#
      • 1...Kd6
        • 2.Qe7#

This anticipates 275294(2023)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • K(d);N_GUARD,S_FLIGHT::B(A)
    • K(d);N_GUARD,S_FLIGHT::QAR1(C)
    • B(b);SBLOCK::QAR1(C)
    • S(e);SBLOCK::QAB(C)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAB(C)
      • Vars
        • K(d);N_GUARD,S_FLIGHT::B(A)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(B);
      • Threat
        • QAR1(C)
      • Vars
        • K(d);P-FLIGHT::QAB1(C)
        • K(d);N_GUARD,P-FLIGHT::QAB1(C)
        • K(d);N_GUARD,S_FLIGHT::QAR1(C)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(B);
      • Threat
        • QAR1(C)
      • Vars
        • K(d);N_GUARD,P-FLIGHT::QAB1(C)
        • K(d);P-FLIGHT,XS(B)::QAB1(C)
        • K(d);S_FLIGHT::QAR1(C)
      • Refutation
        • S(e);
    • Try
      • B(A);CHECK
      • Vars
        • K(d);N_GUARD,S_FLIGHT::QAR1(C)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(C);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • S(e);::QAB1(C)
        • B(b);::B(A)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • S(B);
    • Threat
      • QAR1(C)
    • Vars
      • K(d);P-FLIGHT,XS(B)::QAB1(C)
      • K(d);S_FLIGHT::QAR1(C)
      • K(d);N_GUARD,P-FLIGHT::QAB1(C)
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