MESON Chess Problem Database

Problem Display
PID: 16596 (6b1/3npQ2/B1R3p1/5r2/4k1P1/RN2PnK1/8/2N5 w - - 0 1)

Adabashev, Mark Ivanovich

Shakhmaty v SSSR, 1941

6b1/3npQ2/B1R3p1/5r2/4k1P1/RN2PnK1/8/2N5

#2

9 + 7

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qf4#
    • 1...Re5
      • 2.Qxf3#
    • 1...Sfe5
      • 2.Sd2#
    • 1...Sde5
      • 2.Sc5#
  • Tries
    • 1.Sd2+?
      • 1...Ke5
        • 2.Sd3#
      • 1...Sxd2!
    • 1.Ra4+?
      • 1...Kxe3
        • 2.Rc3#
      • 1...Ke5
        • 2.Sd3#
      • 1...Sd4!
    • 1.Qc4+?
      • 1...Kxe3
        • 2.Qe2#
        • 2.Qd3#
      • 1...Ke5
        • 2.Sd3#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Bxc4!
    • 1.Qxf5+?
      • 1...Kxe3
        • 2.Rc3#
        • 2.Qd3#
        • 2.Qxf3#
        • 2.Qf4#
      • 1...gxf5!
  • Keys
    • 1.Bb7!
      • threat
        • 2.Re6#
      • 1...Kxe3
        • 2.Rc3#
      • 1...Ke5
        • 2.Re6#
      • 1...e6
        • 2.Rxe6#
      • 1...Rd5
        • 2.Qf4#
      • 1...Re5
        • 2.Qxf3#
      • 1...Sfe5
        • 2.Sd2#
      • 1...Sde5
        • 2.Sc5#
      • 1...e5
        • 2.Rc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(c);OGATE,SBLOCK::QAR1(I)
    • R(c);OGATE,SBLOCK::QAB1(I),XS(a)
    • S(a);N_GUARD,SBLOCK::S(C)
    • S(e);N_GUARD,SBLOCK,S_CUTR(c)::S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);P-FLIGHT::S(A)
      • Refutation
        • S(a);XS(C)
    • Try
      • R(B);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(D)::R(H)
        • K(b);P-FLIGHT::S(A)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • Q(I);CHECK
      • Vars
        • K(b);P-FLIGHT::S(A)
        • S(a);N_GUARD,P_SPINS(a)::QAR1(I),XS(a)
      • Refutation
        • B(g);XQ(I)
    • Try
      • Q(I);CHECK,XR(c)
      • Refutation
        • P(d);XQ(I)
  • Actual
    • B(G);
    • Threat
      • B(G)+R(H),DCHECK
    • Vars
      • K(b);P-FLIGHT,XP(D)::R(H)
      • K(b);P-FLIGHT::R1(H)
      • P(f);::B(G)+R(H),DCHECK,XP(f)
      • R(c);OGATE,SBLOCK::QAR1(I)
      • R(c);OGATE,SBLOCK::QAB1(I),XS(a)
      • S(a);N_GUARD,SBLOCK::S(C)
      • S(e);N_GUARD,SBLOCK,S_CUTR(c)::S(C)
      • P(f);SBLOCK,S_CUTR(c)::B(G)+R(H)
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).