MESON Chess Problem Database

Problem Display
PID: 201505 (7K/8/2n2Qp1/3pN3/Rq2kpP1/R1b1P3/1BPrnPP1/8 w - - 0 1)

Rothstein, Louis

3rd Prize, Centurini Ty. (L'Italia Scacchistica), 1922

7K/8/2n2Qp1/3pN3/Rq2kpP1/R1b1P3/1BPrnPP1/8

#2

11 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.cxd3#
    • 1...Bxb2
      • 2.f3#
    • 1...Bd4
      • 2.f3#
    • 1...Bxe5
      • 2.f3#
    • 1...Sc1
      • 2.Qxf4#
    • 1...Sg1
      • 2.Qxf4#
    • 1...Sg3
      • 2.Qxf4#
    • 1...Sed4
      • 2.Qxf4#
    • 1...f3
      • 2.gxf3#
    • 1...g5
      • 2.Qf5#
  • Keys
    • 1.Sd7!
      • threat
        • 2.Sc5#
      • 1...Bxf6+
        • 2.Sxf6#
      • 1...d4
        • 2.Qxc6#
      • 1...Rd4
        • 2.Qxg6#
      • 1...Bd4
        • 2.f3#
      • 1...Sed4
        • 2.Qxf4#
      • 1...Scd4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 8
  • Sets
    • R(a);OGATE::P(B),XR(a)
    • B(c);XB(A)::P(C)
    • B(c);N_SPINQ(d)::P(C)
    • B(c);P_PINQ(J),XS(I)::P(C)
    • S(b);N_GUARD::QAR1(J),XP(f)
    • S(b);N_GUARD,N_SPINQ(d)::QAR1(J),XP(f)
    • P(f);OGATE::P(D),XP(f)
    • P(i);N_GUARD::QAB1(J)
  • Actual
    • S(I);P_SPINQ(J)
    • Threat
      • S(I)
    • Vars
      • B(c);CHECK,XQ(J)::S(I),XB(c)
      • P(g);N_PINQ(J),N_SPINQ(d)::QAB(J),XS(h)
      • R(a);N_PINQ(J),N_SPINQ(d)::QAB(J),XP(i)
      • B(c);N_SPINQ(d)::P(C)
      • S(b);N_PINQ(J),N_SPINQ(d)::QAR1(J),XP(f)
      • S(h);N_GUARD,N_PINQ(J),N_SPINQ(d),S_CUTB(c)::QAR1(J)
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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).