MESON Chess Problem Database

Problem Display
PID: 261829 (8/2B5/RN5K/3PpkPp/1Rp2P2/1p2p3/b3Q2N/2b5 w - - 0 1)

Aliovsadzade, Rauf Gadzhiaga ogli

StrateGems, 2022

8/2B5/RN5K/3PpkPp/1Rp2P2/1p2p3/b3Q2N/2b5

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf4
      • 2.Qf3#
  • Tries
    • 1.Qf3?
      • threat
        • 2.fxe5#
      • 1...exf4
        • 2.Qxf4#
      • 1...e4
        • 2.Qh3#
      • 1...e2!
    • 1.Qxc4?
      • threat
        • 2.Qe4#
      • 1...e4
        • 2.Qxe4#
      • 1...Bb1!
    • 1.fxe5?
      • threat
        • 2.Qf3#
      • 1...Kf4
        • 2.Qf3#
      • 1...Ke4!
  • Keys
    • 1.Sxc4!
      • threat
        • 2.Sd6#
      • 1...Ke4
        • 2.Sxe3#
      • 1...Kxf4
        • 2.Qf3#
      • 1...exf4
        • 2.Qd3#
      • 1...e4
        • 2.Rf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(g);OGATEB,P-FLIGHT,P_SPINP(e),XP(D)::QAR1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR(A)+P(D),XP(f)
      • Vars
        • P(f);OGATE,P_SPINP(f),XP(D)::QAR1(A),XP(f)
        • P(f);SBLOCK::QAB(A)
      • Refutation
        • P(d);
    • Try
      • Q(A);XP(e)
      • Threat
        • QAB1(A)
      • Vars
        • P(f);::QAB1(A),XP(f)
      • Refutation
        • B(b);
    • Try
      • P(D);XP(f)
      • Threat
        • QAR2(A)
      • Vars
        • K(g);P-FLIGHT,P_SPINP(e)::QAR1(A)
      • Refutation
        • K(g);P_SPINP(d),S_FLIGHT
  • Actual
    • S(H);XP(e)
    • Threat
      • S(H)
    • Vars
      • K(g);P_SPINP(d),S_CUTB(a),S_FLIGHT::R(C)+S(H),XP(d)
      • K(g);OGATEB,P-FLIGHT,P_SPINP(f),XP(D)::QAR1(A)
      • P(f);N_GUARD,XP(D)::QAB(A)
      • P(f);SBLOCK::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).