MESON Chess Problem Database

Problem Display
PID: 243309 (5B2/K1PB2P1/1R2N3/p3k1pp/2P4q/1nprpQ2/8/1b6 w - - 0 1)

Andersson, Gunnar

Skakbladet, 1938

5B2/K1PB2P1/1R2N3/p3k1pp/2P4q/1nprpQ2/8/1b6

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Bxd6#
    • 1...Sd4
      • 2.Bd6#
    • 1...g4
      • 2.Qf4#
  • Tries
    • 1.Be7?
      • threat
        • 2.Bf6#
      • 1...g4
        • 2.Qf4#
      • 1...Qf4!
    • 1.Rb5+?
      • 1...Rd5
        • 2.Rxd5#
      • 1...Sc5!
    • 1.Qd5+?
      • 1...Kf6
        • 2.Sd4#
        • 2.Sf4#
        • 2.Sc5#
        • 2.Sxg5#
        • 2.Sd8#
      • 1...Rxd5!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sc6#
      • 1...Kxd4
        • 2.Qd5#
      • 1...Qxd4
        • 2.Qf5#
      • 1...Rxd4
        • 2.Re6#
      • 1...Sxd4
        • 2.Bd6#
      • 1...Qe4
        • 2.Qf6#
      • 1...Qf4
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • R(d);N_GUARD::B(I),XR(d)
    • S(b);S_CUTR(d)::B(I)
    • P(i);N_GUARD,S_CUTQ(f)::QAB1(A)
  • Tries
    • Try
      • B(I);
      • Threat
        • B(I)
      • Vars
        • P(i);N_GUARD,S_CUTQ(f)::QAB1(A)
      • Refutation
        • Q(f);
    • Try
      • R(C);CHECK
      • Vars
        • R(d);N_GUARD,P_SPINR(d)::R1(C),XR(d)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(A);CHECK
      • Refutation
        • R(d);XQ(A)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(h);S_FLIGHT,XS(D)::QAR1(A)
      • Q(f);P_PINR(C),SBLOCK,XS(D)::QAR1(A)
      • R(d);SBLOCK,XS(D)::R1(C)
      • S(b);SBLOCK,XS(D)::B(I)
      • Q(f);SBLOCK::QAB1(A)
      • Q(f);SBLOCK::QAR1(A)
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).