MESON Chess Problem Database

Problem Display
PID: 7040 (7b/2N1p3/1Kn1Q2r/1NR4p/1k2qRn1/1P1B4/r2P4/4B3 w - - 0 1)

Adabashev, Mark Ivanovich

Trud, 1935

7b/2N1p3/1Kn1Q2r/1NR4p/1k2qRn1/1P1B4/r2P4/4B3

#2

10 + 9

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qc4
      • 2.Qxc4#
    • 1...Rb2
      • 2.Sa6#
    • 1...Rc2
      • 2.Sa6#
    • 1...Rxd2
      • 2.Sa6#
    • 1...Ra6+
      • 2.Sxa6#
    • 1...Bc3
      • 2.dxc3#
    • 1...Bd4
      • 2.Qc4#
    • 1...Sa5
      • 2.Sa6#
  • Tries
    • 1.Rxe4+?
      • 1...Bd4
        • 2.Qc4#
      • 1...Sd4!
    • 1.Rc4+?
      • 1...Qxc4
        • 2.Qxc4#
      • 1...Kxb3!
  • Keys
    • 1.Bc2!
      • threat
        • 2.Sd5#
      • 1...Ra6+
        • 2.Sxa6#
      • 1...Rxc2
        • 2.Sa6#
      • 1...Bd4
        • 2.Qc4#
      • 1...Se3
        • 2.d4#
      • 1...Sf6
        • 2.d3#
      • 1...Sd4
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • Q(c);N_GUARD::QAR1(I),XQ(c)
    • R(a);N_GUARD::S(J)
    • R(a);N_GUARD,P_SPINR(a),XP(B)::S(J)
    • R(a);CHECK,N_GUARD::S(J),XR(a)
    • B(i);OGATE::P(B),XB(i)
    • B(i);N_SPINQ(c),P_PINR(G),S_CUTQ(c)::QAR1(I)
    • S(f);P_PINQ(I),S_CUTR(a)::S(J)
  • Tries
    • Try
      • R(E);CHECK,XQ(c)
      • Vars
        • B(i);P_PINR(G),P_SPINB(i)::QAR1(I)
      • Refutation
        • S(f);P_PINQ(I),P_SPINS(f)
    • Try
      • R(G);CHECK,N_PINQ(c)
      • Vars
        • Q(c);OGATE,P_SPINQ(c),XR(G)::QAR1(I),XQ(c)
      • Refutation
        • K(b);P-FLIGHT,XP(C)
  • Actual
    • B(D);
    • Threat
      • S(J)
    • Vars
      • R(a);CHECK,N_GUARD::S(J),XR(a)
      • R(a);N_GUARD,XB(D)::S(J)
      • B(i);N_SPINQ(c),P_PINR(G),S_CUTQ(c)::QAR1(I)
      • S(d);::B(A)+P(B)
      • S(d);S_CUTB(i)::B(A)+P(B)
      • S(f);N_SPINQ(c),P_PINQ(I),S_CUTQ(c)::R1(G)
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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).