MESON Chess Problem Database

Problem Display
PID: 137508 (2b2K2/Q4P2/4p3/2p1rPp1/7N/b1B1k1P1/R2R1NP1/4n1n1 w - - 0 1)

Badger, EHM

The Field, 1927

(First published on Thu Mar 31 1927)

2b2K2/Q4P2/4p3/2p1rPp1/7N/b1B1k1P1/R2R1NP1/4n1n1

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Sd1#
    • 1...Sxg2
      • 2.Rd3#
    • 1...Sd3
      • 2.Rxd3#
    • 1...Sef3
      • 2.Rd3#
    • 1...Se2
      • 2.Rxe2#
    • 1...Sgf3
      • 2.Re2#
    • 1...Sh3
      • 2.Re2#
  • Tries
    • 1.Qxc5+?
      • 1...Rxc5
        • 2.Bd4#
      • 1...Bxc5+!
    • 1.Qxa3?
      • threat
        • 2.Bd4#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sc2!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qxg5#
      • 1...Rxf5
        • 2.Sxf5#
      • 1...Sxg2
        • 2.Rd3#
      • 1...gxh4
        • 2.Qg5#
      • 1...exf5
        • 2.Qxe5#
      • 1...Se2
        • 2.Rxe2#
      • 1...Re4
        • 2.Sd1#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sef3
        • 2.Rd3#
      • 1...Sgf3
        • 2.Re2#
      • 1...Sh3
        • 2.Re2#
      • 1...c4
        • 2.Bd4#
      • 1...g4
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(f);SBLOCK::S(C)
    • S(a);N_GUARD,XP(D)::R1(B)
    • S(a);N_GUARD::R1(B),XS(a)
    • S(a);N_GUARD::R1(B)
    • S(b);N_GUARD::R1(B),XS(b)
    • S(b);N_GUARD::R1(B)
  • Tries
    • Try
      • Q(I);CHECK,P_SPINQ(I),XP(e)
      • Vars
        • R(f);XQ(I)::B(E)
      • Refutation
        • B(c);CHECK,XQ(I)
    • Try
      • Q(I);N_PINP(e),XB(c)
      • Threat
        • QAR(I)+B(E),DCHECK
      • Vars
        • S(a);N_GUARD::R1(B),XS(a)
      • Refutation
        • S(a);
  • Actual
    • Q(I);N_PINP(e)
    • Threat
      • QAB(I),XP(g)
    • Vars
      • R(f);P_PINP(J),P_SPINP(h),XP(H)::S(G),XR(f)
      • S(a);N_GUARD,XP(D)::R1(B)
      • P(g);XS(G)::QAB(I)
      • P(h);OGATE,P_SPINR(f),XP(H)::QAR2(I),XR(f)
      • S(b);N_GUARD::R1(B),XS(b)
      • R(f);SBLOCK::S(C)
      • S(a);N_GUARD::R1(B),XS(a)
      • S(a);N_GUARD::R1(B)
      • S(b);N_GUARD::R1(B)
      • P(e);N_GUARD,P_PINQ(I)::B(E)
      • P(g);::QAB(I)
HTML5 logo

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).