MESON Chess Problem Database

Problem Display
PID: 119985 (3N4/2B5/2P5/2kp2K1/p7/P2P4/3P4/7Q w - - 0 1)

Bobrov, Pavel Pavlovich

La Strategie, 1906

3N4/2B5/2P5/2kp2K1/p7/P2P4/3P4/7Q

#2

8 + 3

6490 yacpdb 2009
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qf3?
      • 1...Kd4
        • 2.Se6#
        • 2.Qe3#
      • 1...d4
        • 2.Qf5#
      • 1...Kb5!
    • 1.Qb1?
      • threat
        • 2.Qb4#
        • 2.Qb6#
      • 1...Kd4
        • 2.Se6#
      • 1...d4!
    • 1.Qc1+?
      • 1...Kd4
        • 2.Qc3#
      • 1...Kb5!
    • 1.Qe1?
      • 1...Kd4
        • 2.Qe3#
      • 1...d4
        • 2.Qe5#
      • 1...Kb5!
    • 1.Qg1+?
      • 1...Kb5
        • 2.Qb6#
      • 1...d4!
    • 1.Qh3?
      • 1...Kd4
        • 2.Se6#
        • 2.Qe3#
      • 1...d4
        • 2.Qf5#
      • 1...Kb5!
    • 1.Qh7?
      • 1...Kd4
        • 2.Se6#
      • 1...d4
        • 2.Qf5#
      • 1...Kb5!
    • 1.Qh8?
      • 1...d4
        • 2.Qe5#
      • 1...Kb5!
  • Keys
    • 1.Qf1!
      • 1...Kd4
        • 2.Se6#
      • 1...Kb5
        • 2.d4#
      • 1...d4
        • 2.Qf5#

This anticipates 119986(1906), 102140(1911)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • P(c);OGATEB,SBLOCK::QAR(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);S_FLIGHT::S(H)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
        • P(c);OGATEB::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • P(c);P_SPINP(c)
    • Try
      • Q(A);
      • Vars
        • P(c);OGATEB,SBLOCK::QAR(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::S(H)
        • P(c);OGATEB,SBLOCK::QAR(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(c);OGATEB::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::S(H)
      • K(b);P-FLIGHT::QAB(A)+P(D)
      • P(c);OGATEB,SBLOCK::QAR(A)
HTML5 logo

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).