MESON Chess Problem Database

Problem Display
PID: 106920 (8/3p2p1/3P1pPp/1p1Qpk1B/1Pp4B/2K2P2/5P2/8 w - - 0 1)

Hultberg, Gustav Herbert

Fairy Chess Review, 1936

8/3p2p1/3P1pPp/1p1Qpk1B/1Pp4B/2K2P2/5P2/8

#2

9 + 8

6490 yacpdb 2009
3713 Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qe4#
  • Tries
    • 1.Kb2?
      • 1...Kf4
        • 2.Qe4#
      • 1...c3+!
    • 1.Kc2?
      • 1...Kf4
        • 2.Qe4#
      • 1...c3!
    • 1.Kd2?
      • 1...Kf4
        • 2.Qe4#
      • 1...c3+!
    • 1.Bg4+?
      • 1...Kf4
        • 2.Qe4#
        • 2.Qd2#
      • 1...Kxg6!
    • 1.Qxc4?
      • threat
        • 2.Qg4#
      • 1...e4
        • 2.Qxe4#
      • 1...bxc4!
    • 1.Qb7?
      • 1...Kf4
        • 2.Qe4#
      • 1...e4
        • 2.Qxe4#
      • 1...Ke6!
    • 1.Qa8?
      • 1...Kf4
        • 2.Qe4#
      • 1...e4
        • 2.Qxe4#
      • 1...Ke6!
  • Keys
    • 1.f4!
      • 1...Kxf4
        • 2.Qf3#

Anticipated by 227189(1928)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(d);N_SPINP(c),P-FLIGHT::QAR1(F)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(d);N_SPINP(c),P-FLIGHT::QAR1(F)
      • Refutation
        • P(a);CHECK
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(d);N_SPINP(c),P-FLIGHT::QAR1(F)
      • Refutation
        • P(a);
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(d);N_SPINP(c),P-FLIGHT::QAR1(F)
      • Refutation
        • P(a);CHECK
    • Try
      • B(G);CHECK
      • Refutation
        • K(d);N_SPINP(c),S_FLIGHT,XP(I)
    • Try
      • Q(F);N_PINP(c),XP(a)
      • Threat
        • QAB1(F)
      • Vars
        • P(c);::QAB1(F),XP(c)
      • Refutation
        • P(b);XQ(F)
    • Try
      • Q(F);N_PINP(c)
      • Vars
        • K(d);P-FLIGHT::QAR1(F)
        • P(c);::QAB1(F),XP(c)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(F);N_PINP(c)
      • Vars
        • K(d);P-FLIGHT::QAR1(F)
        • P(c);::QAB1(F),XP(c)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • P(C);
    • Vars
      • K(d);N_SPINP(c),OGATEB,P-FLIGHT,XP(C)::QAR1(F)
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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).