MESON Chess Problem Database

Problem Display
PID: 181895 (qr6/3Q1P2/1P1R1b2/3b3B/p3kP2/8/1r2P1Nn/Bn2R2K w - - 0 1)

Creyghton, JP

San Francisco Chronicle, 1905

qr6/3Q1P2/1P1R1b2/3b3B/p3kP2/8/1r2P1Nn/Bn2R2K

#2

11 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Bg6#
    • 1...Rc2
      • 2.Bg6#
    • 1...Rd2
      • 2.Bg6#
    • 1...Rb3
      • 2.Bg6#
    • 1...Rb4
      • 2.Bg6#
    • 1...Rb5
      • 2.Bg6#
    • 1...R2xb6
      • 2.Bg6#
    • 1...Ba2
      • 2.Bg6#
    • 1...Bb3
      • 2.Bg6#
    • 1...Bc4
      • 2.Bg6#
    • 1...Bc6
      • 2.Bg6#
    • 1...Bb7
      • 2.Bg6#
    • 1...Bd4
      • 2.Bg6#
  • Tries
    • 1.Rxd5?
      • threat
        • 2.Bg6#
        • 2.Qf5#
      • 1...Rxe2
        • 2.Rxe2#
        • 2.Qf5#
      • 1...Rg8
        • 2.Qf5#
      • 1...Be5
        • 2.Bg6#
        • 2.Rxe5#
      • 1...Qxd5!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qd3#
      • 1...Kd4
        • 2.Qb4#
      • 1...Kf5
        • 2.e4#
      • 1...Rxe2
        • 2.Qxb1#
      • 1...Rxb5
        • 2.Bg6#
      • 1...Qa6
        • 2.Qxd5#
      • 1...Rd2
        • 2.Bg6#
      • 1...Rb3
        • 2.Bg6#
      • 1...Bc4
        • 2.Bg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 9
  • Sets
    • R(b);::B(G)
    • R(b);XP(H)::B(G)
    • B(f);::B(G)
    • B(g);SBLOCK::B(G)
  • Tries
    • Try
      • R(I);XB(f)
      • Threat
        • DUALS(2)
      • Vars
        • R(i);::QAB1(J)
      • Refutation
        • Q(h);XR(I)
  • Actual
    • Q(J);
    • Threat
      • QAB1(J)
    • Vars
      • K(e);P-FLIGHT,P_PINS(E),P_SPINB(f),P_SPINR(b)::QAR2(J)
      • K(e);OGATE,P_PINS(E),P_SPINB(f),S_FLIGHT::P(D)
      • R(b);OGATE,P_SPINR(b),XP(D)::QAB(J),XS(a)
      • R(b);XQ(J)::B(G)
      • Q(h);N_GUARD::QAB1(J),XB(f)
      • R(b);::B(G)
      • B(f);::B(G)
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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).