MESON Chess Problem Database

Problem Display
PID: 109556 (Q7/4R1p1/6p1/6K1/3kBB2/1P6/8/8 w - - 0 1)

Tuzar, Vaclav

Shakhmatny Zhurnal, 1892

Q7/4R1p1/6p1/6K1/3kBB2/1P6/8/8

#2

6 + 3

6490 yacpdb 2009
5454 Near Snap 2013

SOLUTION

  • SOUND
  • Tries
    • 1.Be5+?
      • 1...Kc5
        • 2.Qa5#
      • 1...Ke3!
    • 1.Rd7+?
      • 1...Kc5
        • 2.Qa5#
      • 1...Kc3!
    • 1.Qb8?
      • threat
        • 2.Qe5#
        • 2.Qb4#
      • 1...Kc5
        • 2.Be3#
      • 1...Kc3!
  • Keys
    • 1.Rb7!
      • 1...Kc3
        • 2.Qa1#
      • 1...Kxe4
        • 2.Rd7#
      • 1...Kc5
        • 2.Qa7#

This anticipates 11729(1971)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(E);
    • Vars
      • K(a);S_FLIGHT::QAB(F)
      • K(a);P-FLIGHT,XB(B)::QAB(F)+R(E)
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