MESON Chess Problem Database

Problem Display
PID: 245489 (8/3B2B1/8/8/4k1p1/1n4Q1/6K1/8 w - - 0 1)

Shumarin, Vladimir Pavlovich

Kudesnik, 2001

8/3B2B1/8/8/4k1p1/1n4Q1/6K1/8

#2

4 + 3

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Bb5?
      • threat
        • 2.Qe5#
      • 1...Kd5
        • 2.Qe5#
      • 1...Kf5!
    • 1.Qxb3?
      • 1...g3
        • 2.Qf3#
      • 1...Kf4!
  • Keys
    • 1.Qc3!
      • 1...Kf4
        • 2.Qe5#
      • 1...Kd5
        • 2.Qc6#
      • 1...Sa1
        • 2.Qd4#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sd2
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sa5
        • 2.Qd4#
      • 1...Sc5
        • 2.Qd4#
      • 1...g3
        • 2.Qf3#

Anticipated by 23079(1996)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);XS(a)
      • Vars
        • P(c);N_GUARD::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(b);P-FLIGHT::QAB1(B)
      • K(b);S_FLIGHT::QAB1(B)
      • S(a);N_GUARD::QAR1(B)
      • S(a);N_GUARD::QAR1(B),XS(a)
      • P(c);N_GUARD::QAB1(B)
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