MESON Chess Problem Database

Problem Display
PID: 23552 (8/1P6/1p6/1P6/1k6/3QK3/8/3B4 w - - 0 1)

Podushkin, S

Due Alfieri, 1979

8/1P6/1p6/1P6/1k6/3QK3/8/3B4

#2

5 + 2

3296 Shakhmatny zadachi miniaturi 1987
145 StrateGems 2012
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Be2?
      • 1...Ka5
        • 2.Qa3#
      • 1...Kc5
        • 2.Qd4#
      • 1...Ka4!
    • 1.Qc2?
      • 1...Ka3
        • 2.Qb3#
      • 1...Ka5
        • 2.Qa4#
      • 1...Kxb5!
    • 1.Qc4+?
      • 1...Ka3
        • 2.Qb3#
      • 1...Ka5
        • 2.Qa4#
      • 1...Kxc4!
    • 1.Qb3+?
      • 1...Ka5
        • 2.Qa4#
      • 1...Kc5!
    • 1.Qd5?
      • 1...Ka3
        • 2.Qb3#
      • 1...Kc3
        • 2.Qb3#
        • 2.Qd4#
      • 1...Ka5!
    • 1.b8Q?
      • 1...Kc5
        • 2.Qbd6#
        • 2.Qf8#
      • 1...Ka5!
    • 1.b8B?
      • 1...Kc5
        • 2.Bd6#
      • 1...Ka5!
  • Keys
    • 1.b8S!
      • 1...Ka5
        • 2.Sc6#
      • 1...Kc5
        • 2.Sa6#

This anticipates 173967(2005)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
        • K(a);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(E);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(E);
      • Vars
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(E);
    • Vars
      • K(a);S_FLIGHT::S(E)
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