MESON Chess Problem Database

Problem Display
PID: 104710 (8/8/8/5N2/4k3/1B4QN/3b4/7K w - - 0 1)

Livshits, Eduard Yakovlevich

Il Due Mosse, 1959

8/8/8/5N2/4k3/1B4QN/3b4/7K

#2

5 + 2

6490 yacpdb 2009
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Be6?
      • threat
        • 2.Sf2#
      • 1...Be3
        • 2.Qxe3#
      • 1...Be1
        • 2.Sg5#
        • 2.Qe3#
      • 1...Bf4!
    • 1.Qf4+?
      • 1...Kd3
        • 2.Qc4#
      • 1...Bxf4!
    • 1.Qe5+?
      • 1...Kd3
        • 2.Sf2#
      • 1...Kf3
        • 2.Bd1#
      • 1...Kxe5!
    • 1.Qd6?
      • threat
        • 2.Qd5#
      • 1...Kxf5
        • 2.Qe6#
      • 1...Kf3!
    • 1.Qe3+?
      • 1...Kxf5
        • 2.Qe6#
      • 1...Bxe3!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qd5#
      • 1...Kd3
        • 2.Qc4#
      • 1...Kf3
        • 2.Qg2#
      • 1...Ke5
        • 2.Qe6#
      • 1...Kxf5
        • 2.Qe6#

This anticipates 215662(1979)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Threat
        • S(D)
      • Vars
        • B(a);N_GUARD::QAR1(C),XB(a)
      • Refutation
        • B(a);
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(C)
      • Refutation
        • B(a);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);S_FLIGHT::S(D)
        • K(b);S_FLIGHT::B(B)
      • Refutation
        • K(b);P-FLIGHT,XQ(C)
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(b);S_FLIGHT,XS(E)::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XS(E)::QAB1(C)
      • Refutation
        • B(a);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(b);S_FLIGHT::QAB1(C)
      • K(b);P-FLIGHT::QAR1(C)
      • K(b);S_FLIGHT,XS(E)::QAB1(C)
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