MESON Chess Problem Database

Problem Display
PID: 225847 (2b4n/1pKp4/8/4N3/Np1k2p1/BP6/4QP2/b7 w - - 0 1)

Zarhs, Aleksandr

Praca, 1996

2b4n/1pKp4/8/4N3/Np1k2p1/BP6/4QP2/b7

#2

7 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Qe3#
  • Tries
    • 1.Kd6?
      • threat
        • 2.Qd3#
        • 2.Qc4#
        • 2.Qxg4#
        • 2.Qe3#
      • 1...Sg6
        • 2.Qd3#
        • 2.Qc4#
        • 2.Qe3#
      • 1...g3
        • 2.Sf3#
        • 2.Qd3#
        • 2.Qc4#
        • 2.Qg4#
        • 2.Qe3#
      • 1...b5
        • 2.Qd3#
        • 2.Qxg4#
        • 2.Qe3#
      • 1...Sf7+!
    • 1.Sf3+?
      • 1...Kd5
        • 2.Qc4#
      • 1...gxf3!
    • 1.Sxg4?
      • threat
        • 2.Qc4#
      • 1...Kd5
        • 2.Qc4#
      • 1...d5
        • 2.Qe3#
      • 1...b5!
    • 1.Bb2+?
      • 1...Kd5
        • 2.Qc4#
      • 1...Bxb2!
    • 1.f4?
      • threat
        • 2.Qd3#
      • 1...Kd5
        • 2.Qc4#
      • 1...gxf4 ep!
  • Keys
    • 1.Sb6!
      • threat
        • 2.Qe3#
      • 1...Kc3
        • 2.Qd3#
      • 1...Kc5
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(f);SBLOCK::QAB1(A)
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Threat
        • DUALS(4)
      • Refutation
        • S(h);CHECK
    • Try
      • S(F);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(A)
      • Refutation
        • P(d);XS(F)
    • Try
      • S(F);XP(d)
      • Threat
        • QAR1(A)
      • Vars
        • K(c);P-FLIGHT::QAB1(A)
        • P(f);SBLOCK::QAB1(A)
      • Refutation
        • P(e);
    • Try
      • B(C);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(A)
      • Refutation
        • B(a);XB(C)
    • Try
      • P(B);
      • Threat
        • QAR1(A)
      • Vars
        • K(c);P-FLIGHT::QAB1(A)
      • Refutation
        • P(d);EP,XP(B)
  • Actual
    • S(E);
    • Threat
      • QAB1(A)
    • Vars
      • K(c);S_FLIGHT::QAR1(A)
      • K(c);P_SPINP(b),S_FLIGHT::QAR1(A)
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