MESON Chess Problem Database

Problem Display
PID: 198225 (4R1r1/1Nprp2q/2B1k3/3NpR1p/6P1/B2K1Q2/8/8 w - - 0 1)

Schor, Laszlo

In Tramway (Lo Scacchista), 1920

4R1r1/1Nprp2q/2B1k3/3NpR1p/6P1/B2K1Q2/8/8

#2

9 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf5+
      • 2.Qxf5#
    • 1...Rxd5+
      • 2.Qxd5#
    • 1...Rd6
      • 2.Sc5#
    • 1...Rd8
      • 2.Sxd8#
    • 1...e4+
      • 2.Qxe4#
  • Keys
    • 1.Bxe7!
      • threat
        • 2.Sc5#
      • 1...Qxf5+
        • 2.Qxf5#
      • 1...Rxd5+
        • 2.Qxd5#
      • 1...e4+
        • 2.Qxe4#
      • 1...Qxe7
        • 2.Rf6#
      • 1...Rxe7
        • 2.Sxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(g);CHECK,OGATE,XR(F)::QAB1(C),XQ(g)
    • R(e);CHECK,OGATE,XS(E)::QAB1(C),XR(e)
    • R(e);SBLOCK::S(H)
    • R(e);N_GUARD::S(H),XR(e)
    • P(a);CHECK,N_PINR(F),OGATEB::QAR2(C),XP(a)
  • Actual
    • B(A);XP(f)
    • Threat
      • S(H)
    • Vars
      • Q(g);CHECK,OGATE,XR(F)::QAB1(C),XQ(g)
      • R(e);CHECK,OGATE,XS(E)::QAB1(C),XR(e)
      • P(a);CHECK,N_PINR(F),OGATEB::QAR2(C),XP(a)
      • Q(g);N_PINR(F),P_SPINQ(g),XB(A)::R1(F)
      • R(e);N_PINS(E),P_SPINR(e),XB(A)::S(E),XP(d)
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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).