MESON Chess Problem Database

Problem Display
PID: 250111 (b3R3/r4p1B/1p3K2/4NPPN/R2qkP2/1Q3p1r/3Pn2p/b4n2 w - - 0 1)

Schiffmann, Israel Abraham

L'Italia Scacchistica, 1927

b3R3/r4p1B/1p3K2/4NPPN/R2qkP2/1Q3p1r/3Pn2p/b4n2

#2

11 + 12

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa4
      • 2.Qd3#
    • 1...Qb4
      • 2.Qd3#
    • 1...Qc4
      • 2.Qd3#
    • 1...Rh4
      • 2.Qxf3#
    • 1...Rxh5
      • 2.Qxf3#
    • 1...Bd5
      • 2.Qc2#
      • 2.Qb1#
      • 2.Qd3#
    • 1...Se3
      • 2.d3#
    • 1...Sfg3
      • 2.Qxf3#
    • 1...Seg3
      • 2.Qxf3#
  • Keys
    • 1.Kg7!
      • threat
        • 2.f6#
      • 1...f6+
        • 2.Sd7#
      • 1...Qxa4
        • 2.Qd3#
      • 1...Rxh5
        • 2.Qxf3#
      • 1...Sxf4
        • 2.Sf6#
      • 1...Qb4
        • 2.Qd3#
      • 1...Qc4
        • 2.Qd3#
      • 1...Se3
        • 2.d3#
      • 1...Sfg3
        • 2.Qxf3#
      • 1...Seg3
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(g);N_SPINQ(g),XR(C)::QAB1(B)
    • Q(g);::QAB1(B)
    • R(f);N_GUARD::QAB1(B),XP(e)
    • R(f);N_GUARD,XS(H)::QAB1(B),XP(e)
    • S(b);SBLOCK::P(A)
    • S(b);S_CUTR(f)::QAB1(B),XP(e)
    • S(c);S_CUTR(f)::QAB1(B),XP(e)
  • Actual
    • K(I);S_FLIGHT
    • Threat
      • B(J)+P(F)
    • Vars
      • P(k);CHECK,N_PINS(E)::R(K)+S(E)
      • Q(g);N_SPINQ(g),XR(C)::QAB1(B)
      • R(f);N_GUARD,XS(H)::QAB1(B),XP(e)
      • S(c);SBLOCK,XP(D)::S(H)
      • Q(g);::QAB1(B)
      • S(b);SBLOCK::P(A)
      • S(b);S_CUTR(f)::QAB1(B),XP(e)
      • S(c);S_CUTR(f)::QAB1(B),XP(e)
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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).