MESON Chess Problem Database

Problem Display
PID: 6995 (2K3n1/1N4QB/b4p2/R4NB1/2P1k1q1/p1P1p2R/2n1P3/8 w - - 0 1)

Adabashev, Mark Ivanovich

1st Prize, Moldavian SSR Ty., 1935

2K3n1/1N4QB/b4p2/R4NB1/2P1k1q1/p1P1p2R/2n1P3/8

#2

11 + 8

3098 FIDE Album (1914-1944) (I) 1971
6138 Tvorsti Shakhmatnoi Krasoti 1998
5459 Sachmatija 2002
145 StrateGems 2002
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe2
      • 2.Sd6#
    • 1...Qf3
      • 2.Sg3#
      • 2.Sd6#
    • 1...Qxf5+
      • 2.Bxf5#
    • 1...Qh5
      • 2.Sg3#
      • 2.Sd6#
    • 1...Qg1
      • 2.Sg3#
      • 2.Sd6#
    • 1...Qg2
      • 2.Sg3#
      • 2.Sd6#
    • 1...Qg3
      • 2.Sxg3#
      • 2.Sd6#
    • 1...Qf4
      • 2.Sg3#
      • 2.Sd6#
    • 1...Qh4
      • 2.Sg3#
      • 2.Sd6#
      • 2.Rxh4#
    • 1...Bxc4
      • 2.Sd6#
    • 1...Bxb7+
      • 2.Qxb7#
    • 1...Sa1
      • 2.Rxe3#
    • 1...Se1
      • 2.Rxe3#
    • 1...Sb4
      • 2.Rxe3#
    • 1...Sd4
      • 2.Rxe3#
    • 1...Sh6
      • 2.Qe7#
    • 1...Se7+
      • 2.Qxe7#
    • 1...fxg5
      • 2.Qe5#
  • Tries
    • 1.Rh4?
      • threat
        • 2.Rxg4#
      • 1...Bxb7+
        • 2.Qxb7#
      • 1...Se7+
        • 2.Qxe7#
      • 1...Qxh4
        • 2.Sg3#
        • 2.Sd6#
      • 1...Qf4
        • 2.Sg3#
        • 2.Sd6#
        • 2.Rxf4#
      • 1...Sh6
        • 2.Qe7#
      • 1...Bb5!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qc6#
      • 1...Qxf5+
        • 2.Bxf5#
      • 1...Bxb7+
        • 2.Qxb7#
      • 1...Se7+
        • 2.Qxe7#
      • 1...Qxe2
        • 2.Sd6#
      • 1...Qxg5
        • 2.Sg3#
      • 1...Bxc4
        • 2.Sd6#
      • 1...fxg5
        • 2.Qe5#
      • 1...Bb5
        • 2.Sc5#
      • 1...Sb4
        • 2.Rxe3#
      • 1...Sd4
        • 2.Rxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(e);N_PINS(F),P_PINS(H),XP(A)::B(J)+S(F),DCHECK
    • Q(e);CHECK,OGATE,P_PINS(H),P_SPINQ(e),XS(F)::B(J),XQ(e)
    • B(f);XP(D)::S(H)
    • B(f);CHECK,OGATE,XS(H)::QAB(I),XB(f)
    • S(a);N_GUARD::R1(C),XP(c)
    • S(h);N_GUARD::QAR(I)
    • S(h);CHECK,N_GUARD::QAR(I),XS(h)
    • P(g);OGATE,XB(G)::QAR1(I)
  • Tries
    • Try
      • R(C);P_PINQ(e)
      • Threat
        • R(C),XQ(e)
      • Vars
        • B(f);CHECK,OGATE,XS(H)::QAB(I),XB(f)
        • S(h);CHECK,N_GUARD::QAR(I),XS(h)
        • S(h);N_GUARD::QAR(I)
      • Refutation
        • B(f);
  • Actual
    • Q(I);
    • Threat
      • QAB(I)
    • Vars
      • Q(e);CHECK,OGATE,P_PINS(H),P_SPINQ(e),XS(F)::B(J),XQ(e)
      • B(f);CHECK,OGATE,XS(H)::QAB(I),XB(f)
      • S(h);CHECK,N_GUARD::QAR(I),XS(h)
      • Q(e);N_PINS(F),P_PINS(H),XP(A)::B(J)+S(F),DCHECK
      • Q(e);N_PINS(F),P_PINS(H),XB(G)::B(J)+S(F),DCHECK
      • B(f);XP(D)::S(H)
      • P(g);N_GUARD,XB(G)::QAR1(I)
      • B(f);::S(H)
      • S(a);N_GUARD::R1(C),XP(c)
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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).