MESON Chess Problem Database

Problem Display
PID: 11447 (8/3K4/2N5/2pkp3/8/8/8/3B2Q1 w - - 0 1)

Faivuzhinsky, Lev O

Prize, Zatejnik, 1938

8/3K4/2N5/2pkp3/8/8/8/3B2Q1

#2

4 + 3

3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Sets
    • 1...e4
      • 2.Qg8#
  • Tries
    • 1.Bc2?
      • threat
        • 2.Qg8#
      • 1...c4
        • 2.Sb4#
        • 2.Se7#
      • 1...Kc4!
    • 1.Bf3+?
      • 1...e4
        • 2.Qg8#
      • 1...Kc4!
    • 1.Qe3?
      • threat
        • 2.Qd3#
      • 1...Kc4
        • 2.Qb3#
      • 1...c4
        • 2.Sb4#
        • 2.Se7#
        • 2.Qxe5#
      • 1...e4!
    • 1.Qf1?
      • threat
        • 2.Qd3#
      • 1...Ke4
        • 2.Qf3#
      • 1...e4
        • 2.Qf7#
      • 1...c4!
    • 1.Qg2+?
      • 1...e4
        • 2.Qg8#
      • 1...Kc4!
    • 1.Qg4?
      • threat
        • 2.Se7#
      • 1...e4
        • 2.Qe6#
        • 2.Qg8#
      • 1...c4!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qd3#
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke4
        • 2.Qf3#
      • 1...c4
        • 2.Qxe5#
      • 1...e4
        • 2.Qg8#

This anticipates 180065(1993), 239241(2017)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAB(B)
  • Tries
    • Try
      • B(A);
      • Threat
        • QAB(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(A);CHECK
      • Vars
        • P(c);P_SPINP(c)::QAB(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
        • P(c);SBLOCK::QAB(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);CHECK
      • Vars
        • P(c);P_SPINP(c),SBLOCK::QAB(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • S(C)
      • Refutation
        • P(a);
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • K(b);S_FLIGHT::QAB1(B)
      • P(a);SBLOCK::QAR1(B),XP(c)
      • P(c);SBLOCK::QAB(B)
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