MESON Chess Problem Database

Problem Display
PID: 225712 (8/3p4/2p5/5R2/2p1k1K1/2Ppppn1/pQ3PnB/3R3b w - - 0 1)

Pramuga, Ludovit

Praca, 1947

8/3p4/2p5/5R2/2p1k1K1/2Ppppn1/pQ3PnB/3R3b

#2

7 + 11

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.Re5#
    • 1...Se2
      • 2.Re5#
    • 1...Sh5
      • 2.Re5#
    • 1...d2
      • 2.Qc2#
  • Tries
    • 1.Qb4?
      • threat
        • 2.Qe7#
        • 2.Qxc4#
      • 1...exf2
        • 2.Qe7#
      • 1...d2
        • 2.Qxc4#
      • 1...Sf4
        • 2.Qxc4#
      • 1...Se2
        • 2.Re5#
        • 2.Qe7#
      • 1...c5
        • 2.Qxc4#
      • 1...d5
        • 2.Qe7#
      • 1...d6
        • 2.Qxc4#
      • 1...Sxf5!
    • 1.Qb8?
      • threat
        • 2.Re5#
        • 2.Qe5#
        • 2.Qe8#
      • 1...Sxf5
        • 2.Qe5#
      • 1...Sf4
        • 2.Re5#
        • 2.Qxf4#
        • 2.Qe5#
      • 1...d6
        • 2.Qe8#
      • 1...d2!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Qxf3#
      • 1...Sxe2
        • 2.Re5#
      • 1...dxe2
        • 2.Rd4#
      • 1...fxe2
        • 2.f3#
      • 1...Se1
        • 2.Qxe3#
      • 1...Sf4
        • 2.Qxe3#
      • 1...Sh4
        • 2.Qxe3#
      • 1...d2
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • S(g);::R1(G)
    • P(d);OGATEB::QAB(B)
  • Tries
    • Try
      • Q(B);P_PINP(h)
      • Threat
        • DUALS(2)
      • Vars
        • P(e);XP(C)::QAR(B)
        • P(d);::QAR2(B),XP(h)
        • S(c);::QAR2(B),XP(h)
        • P(j);::QAR2(B),XP(h)
        • P(k);::QAR(B)
        • P(k);::QAR2(B),XP(h)
      • Refutation
        • S(g);XR(G)
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Vars
        • S(g);XR(G)::QAR1(B)
        • P(k);::QAR(B)
      • Refutation
        • P(d);
  • Actual
    • Q(B);P_PINP(e)
    • Threat
      • QAB1(B),XP(f)
    • Vars
      • S(g);N_SPINP(e),XQ(B)::R1(G)
      • P(d);N_SPINP(e),OGATE,XQ(B)::R1(A)
      • P(f);N_SPINP(e),OGATE,XQ(B)::P(C)
      • S(c);N_GUARD::QAR1(B),XP(e)
      • P(d);OGATE::QAR2(B),XP(h)
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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).