MESON Chess Problem Database

Problem Display
PID: 5002 (4Q3/1R6/3p4/3k1NK1/1P6/3p4/3P4/8 w - - 0 1)

Maksimov, Nikolai Ivanovich

Shakhmatny Zhurnal, 1896

4Q3/1R6/3p4/3k1NK1/1P6/3p4/3P4/8

#2

6 + 3

3360 Simple Two-move Themes 1924
3310 2345 Chess Problems 1997
5454 Near Snap 2013
14868 Pirnie Collection 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sg3?
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Qe4#
      • 1...Kc4!
    • 1.Sxd6?
      • 1...Kd4
        • 2.Qe4#
      • 1...Kxd6!
    • 1.Qb5+?
      • 1...Ke6
        • 2.Sd4#
        • 2.Sg7#
        • 2.Re7#
      • 1...Ke4!
    • 1.Qc6+?
      • 1...Ke5
        • 2.Re7#
      • 1...Ke6
        • 2.Re7#
        • 2.Qe4#
        • 2.Qxd6#
      • 1...Kxc6!
    • 1.Qf7+?
      • 1...Ke5
        • 2.Re7#
      • 1...Kc6
        • 2.Sd4#
      • 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 102942(1894)

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

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(F)
      • Vars
        • K(b);P-FLIGHT::QAR1(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(C);XP(c)
      • Vars
        • K(b);P-FLIGHT::QAR1(F)
      • Refutation
        • K(b);P-FLIGHT,XS(C)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);P-FLIGHT::R(E)
      • Refutation
        • K(b);S_FLIGHT,XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);P-FLIGHT::R(E)
        • K(b);S_FLIGHT::S(C)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(b);S_FLIGHT::QAB(F)
      • K(b);S_FLIGHT::QAB(F)+R(E),DCHECK
      • K(b);P-FLIGHT::R(E)
      • K(b);S_FLIGHT::S(C)
      • K(b);S_FLIGHT::R1(E)
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