MESON Chess Problem Database

Problem Display
PID: 162084 (8/4BPK1/1pp1P1N1/Rnrk2NR/1Q3p1b/r6P/6q1/3b3B w - - 0 1)

Soloviov, Alexey F

3rd Prize, Zadachi i Etyudi, 1928

8/4BPK1/1pp1P1N1/Rnrk2NR/1Q3p1b/r6P/6q1/3b3B

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Bxe4#
      • 2.Qxe4#
    • 1...Rf3
      • 2.Qe4#
    • 1...Rc4
      • 2.Qd6#
    • 1...f3
      • 2.Qe4#
    • 1...bxa5
      • 2.Qxc5#
  • Tries
    • 1.Sf3+?
      • 1...Kxe6
        • 2.f8S#
      • 1...Bg5
        • 2.Sxf4#
      • 1...Qg5!
    • 1.Bxg2+?
      • 1...Rf3
        • 2.Qe4#
      • 1...f3
        • 2.Qe4#
      • 1...Bf3!
  • Keys
    • 1.Kf6!
      • threat
        • 2.Sxf4#
      • 1...Bxg5+
        • 2.Rxg5#
      • 1...Rc4
        • 2.Qd6#
      • 1...Rf3
        • 2.Qe4#
      • 1...Bg3
        • 2.Sf3#
      • 1...f3
        • 2.Sf4#
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(c);N_SPINQ(b),S_CUTQ(b)::QAB1(C)
    • R(g);OGATE,P_SPINS(f),SBLOCK::QAR1(C)
    • P(d);N_SPINQ(b),S_CUTQ(b)::QAB1(C)
    • P(i);N_GUARD,XR(D)::QAR1(C),XR(g)
  • Tries
    • Try
      • S(E);CHECK,N_PINQ(b),P_SPINS(H)
      • Vars
        • K(h);S_FLIGHT,XP(G)::P=S
        • B(e);N_PINS(H),P_SPINB(e)::S(H),XP(d)
      • Refutation
        • Q(b);P_SPINQ(b)
    • Try
      • B(A);CHECK,XQ(b)
      • Vars
        • R(c);P_SPINR(c)::QAB1(C)
        • P(d);P_SPINP(d)::QAB1(C)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • K(K);P_SPINS(E),S_FLIGHT
    • Threat
      • S(H),XP(d)
    • Vars
      • B(e);CHECK,OGATE,P_SPINB(e),XS(E)::R(F),XB(e)
      • R(g);OGATE,P_SPINS(f),SBLOCK::QAR1(C)
      • R(c);N_SPINQ(b),S_CUTQ(b)::QAB1(C)
      • B(e);N_PINS(E)::R(F)+S(E)
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).