MESON Chess Problem Database

Problem Display
PID: 102942 (4Q1N1/1R6/3p4/3k4/1P4P1/3pP3/1P1p4/3K4 w - - 0 1)

Zimmermann, Stepan

Shakhmatny Zhurnal, 1894

4Q1N1/1R6/3p4/3k4/1P4P1/3pP3/1P1p4/3K4

#2

8 + 4

6490 yacpdb 2009
5454 Near Snap 2013
3713 Snap 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qb5+?
      • 1...Ke6
        • 2.Re7#
        • 2.Qf5#
      • 1...Ke4!
    • 1.Qc6+?
      • 1...Ke5
        • 2.Re7#
      • 1...Ke6
        • 2.Re7#
        • 2.Qe4#
      • 1...Kxc6!
    • 1.Qf7+?
      • 1...Ke4
        • 2.Re7#
      • 1...Ke5
        • 2.Re7#
        • 2.Qf5#
      • 1...Kc6!
    • 1.Qc8?
      • 1...Ke5
        • 2.Qf5#
      • 1...Ke4!
  • Keys
    • 1.Qa8!
      • 1...Kc4
        • 2.Qa2#
      • 1...Ke4
        • 2.Re7#
      • 1...Ke5
        • 2.Re7#
      • 1...Kc6
        • 2.Se7#
      • 1...Ke6
        • 2.Re7#

Anticipated by 167289(0000)

This anticipates 5002(1896), 178113(1898), 200485(1906), 167288(1908-1910)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);P-FLIGHT::R(F)
      • Refutation
        • K(c);S_FLIGHT,XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);S_FLIGHT::R(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(c);P-FLIGHT::QAR1(G)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(c);S_FLIGHT::QAB(G)
      • K(c);S_FLIGHT::QAB(G)+R(F),DCHECK
      • K(c);P-FLIGHT::R(F)
      • K(c);S_FLIGHT::S(H)
      • K(c);S_FLIGHT::R1(F)
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