MESON Chess Problem Database

Problem Display
PID: 119957 (8/7p/1p1PRp2/1BPk1p2/1p6/5N2/4K1Q1/8 w - - 0 1)

Beck, Antonin

Sport a hry, 1905

8/7p/1p1PRp2/1BPk1p2/1p6/5N2/4K1Q1/8

#2

7 + 6

6490 yacpdb 2009
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe6
      • 2.Qg8#
  • Tries
    • 1.Qh3?
      • threat
        • 2.Qxf5#
      • 1...Kxc5
        • 2.Qxf5#
      • 1...f4
        • 2.Qf5#
      • 1...Kxe6!
    • 1.Qg4?
      • threat
        • 2.Qxf5#
        • 2.Qc4#
      • 1...Kxc5
        • 2.Qxf5#
        • 2.Qc4#
      • 1...Kxe6
        • 2.Qc4#
        • 2.Qg8#
      • 1...f4
        • 2.Qf5#
      • 1...fxg4!
    • 1.Qg6?
      • threat
        • 2.Qxf5#
      • 1...Kxc5
        • 2.Qxf5#
      • 1...Kxe6
        • 2.Qg8#
      • 1...f4
        • 2.Qf5#
      • 1...hxg6!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qxf5#
      • 1...Kxc5
        • 2.Qxf5#
      • 1...Kxe6
        • 2.Qg8#
      • 1...fxg5
        • 2.Re5#

This anticipates 201596(1922)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,S_FLIGHT,XR(G)::QAB(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR2(B),XP(c)
      • Vars
        • K(b);P-FLIGHT,XP(E)::QAR(B),XP(c)
        • P(c);::QAR2(B)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT,XR(G)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAR2(B)
      • Refutation
        • P(c);XQ(B)
    • Try
      • Q(B);
      • Threat
        • QAR2(B),XP(c)
      • Vars
        • K(b);P-FLIGHT,XP(E)::QAR(B),XP(c)
        • K(b);OGATEB,P_SPINP(e),S_FLIGHT,XR(G)::QAB(B)
        • P(c);::QAR2(B)
      • Refutation
        • P(f);XQ(B)
  • Actual
    • Q(B);P_PINP(c)
    • Threat
      • QAR2(B),XP(c)
    • Vars
      • K(b);P-FLIGHT,XP(E)::QAR(B),XP(c)
      • K(b);N_SPINP(c),OGATEB,S_FLIGHT,XR(G)::QAB(B)
      • P(e);N_GUARD,N_SPINP(c),XQ(B)::R1(G)
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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).