MESON Chess Problem Database

Problem Display
PID: 194227 (4b2Q/2K1N1r1/6p1/1pN1kPPn/1p2B3/2r1P3/7p/B4R2 w - - 0 1)

Rothstein, Louis

Pittsburgh Gazette-Times, 1917

4b2Q/2K1N1r1/6p1/1pN1kPPn/1p2B3/2r1P3/7p/B4R2

#2

10 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bd7
      • 2.Sxg6#
    • 1...Bf7
      • 2.Sc6#
    • 1...Sg3
      • 2.Qxg7#
    • 1...Sf4
      • 2.Qxg7#
    • 1...Sf6
      • 2.Qxh2#
    • 1...b3
      • 2.Bxc3#
    • 1...gxf5
      • 2.Rxf5#
  • Tries
    • 1.Bc6?
      • threat
        • 2.Sd3#
      • 1...gxf5
        • 2.Rxf5#
      • 1...Sf4
        • 2.Qxg7#
      • 1...Bxc6!
    • 1.Rd1?
      • threat
        • 2.Rd5#
      • 1...Bf7
        • 2.Sc6#
      • 1...Sf4
        • 2.Qxg7#
      • 1...Sf6
        • 2.Qxh2#
      • 1...Bc6!
    • 1.Qxg7+?
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sxg7!
  • Keys
    • 1.Bh1!
      • 1...gxf5
        • 2.Rxf5#
      • 1...Bc6
        • 2.Sd3#
      • 1...Bd7
        • 2.Sxg6#
      • 1...Bf7
        • 2.Sc6#
      • 1...Sg3
        • 2.Qxg7#
      • 1...Sf4
        • 2.Qxg7#
      • 1...Sf6
        • 2.Qxh2#
      • 1...b3
        • 2.Bxc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(i);::S(I),XP(g)
    • B(i);::S(I)
    • S(f);N_GUARD::QAB(J),XR(h)
    • S(f);OGATE::QAB(J),XP(a)
    • P(c);N_GUARD::B(A),XR(b)
    • P(g);OGATE,XP(F)::R1(B),XP(g)
  • Tries
    • Try
      • B(D);N_SPINS(E),P_SPINS(I)
      • Threat
        • S(E)
      • Vars
        • P(g);OGATE,XP(F)::R1(B),XP(g)
        • S(f);N_GUARD::QAB(J),XR(h)
      • Refutation
        • B(i);XB(D)
    • Try
      • R(B);
      • Threat
        • R1(B)
      • Vars
        • B(i);::S(I)
        • S(f);N_GUARD::QAB(J),XR(h)
        • S(f);OGATE::QAB(J),XP(a)
      • Refutation
        • B(i);N_PINS(E),P_PINS(I)
    • Try
      • Q(J);CHECK,XR(h)
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::QAB1(J),XS(f)
      • Refutation
        • S(f);XQ(J)
  • Actual
    • B(D);
    • Vars
      • P(g);OGATE,XP(F)::R1(B),XP(g)
      • B(i);N_PINS(E),P_PINS(I)::S(E)
      • B(i);::S(I),XP(g)
      • B(i);::S(I)
      • S(f);N_GUARD::QAB(J),XR(h)
      • S(f);OGATE::QAB(J),XP(a)
      • P(c);N_GUARD::B(A),XR(b)
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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).