MESON Chess Problem Database

Problem Display
PID: 102892 (8/b7/4p1QK/P2pP1p1/P1k3NR/Pb3Bp1/1nNPPq2/2R3B1 w - - 0 1)

Pachman, Vladimir

Praca, 1947

8/b7/4p1QK/P2pP1p1/P1k3NR/Pb3Bp1/1nNPPq2/2R3B1

#2

14 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Sce3#
    • 1...Qc5
      • 2.Sge3#
    • 1...Bd4
      • 2.Sce3#
    • 1...Bc5
      • 2.Sge3#
    • 1...d4
      • 2.Sce3#
  • Tries
    • 1.Sa1+?
      • 1...Kd4
        • 2.Sxb3#
      • 1...Bc2!
    • 1.Sb4+?
      • 1...Kd4
        • 2.Sc6#
      • 1...Bc2!
    • 1.Qd3+?
      • 1...Kc5
        • 2.Qb5#
      • 1...Sxd3!
  • Keys
    • 1.Qxe6!
      • threat
        • 2.Qxd5#
      • 1...Kc5
        • 2.Qc8#
      • 1...Qxf3
        • 2.Qa6#
      • 1...Qd4
        • 2.Sce3#
      • 1...Qc5
        • 2.Sge3#
      • 1...Qb6
        • 2.Bxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(b);SBLOCK::R(A)+S(C),DCHECK
    • Q(b);SBLOCK::R(J)+S(I),DCHECK
    • B(i);SBLOCK::R(A)+S(C),DCHECK
    • B(i);SBLOCK::R(J)+S(I),DCHECK
    • P(f);SBLOCK::R(A)+S(C),DCHECK
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINQ(b)::S(C),XB(c)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • S(C);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINQ(b)::S(C)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • Q(M);CHECK
      • Vars
        • K(e);OGATE,P-FLIGHT,P_SPINQ(b)::QAR1(M)
      • Refutation
        • S(a);XQ(M)
  • Actual
    • Q(M);P_PINP(f),XP(h)
    • Threat
      • QAB1(M),XP(f)
    • Vars
      • K(e);N_SPINP(f),P-FLIGHT,P_SPINQ(b)::QAR(M)
      • Q(b);XB(G)::QAB(M)
      • Q(b);SBLOCK::R(A)+S(C),DCHECK
      • Q(b);SBLOCK::R(J)+S(I),DCHECK
      • Q(b);P_PINQ(M)::B(G),XP(f)
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).