MESON Chess Problem Database

Problem Display
PID: 263457 (5K2/8/3p1RpB/1n3b2/3kP1N1/1P1N1q2/2p5/2QR3B w - - 0 1)

Katsnelson, Leonard Ilich

Zadachi i Etyudi, 2009

5K2/8/3p1RpB/1n3b2/3kP1N1/1P1N1q2/2p5/2QR3B

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qb2#
    • 1...Kxe4
      • 2.Sdf2#
    • 1...cxd1Q
      • 2.Qc4#
    • 1...cxd1S
      • 2.Qc4#
    • 1...cxd1B
      • 2.Qc4#
    • 1...cxd1R
      • 2.Qc4#
  • Tries
    • 1.Be3+?
      • 1...Kc3
        • 2.Qb2#
      • 1...Kxe4
        • 2.Sdf2#
      • 1...Qxe3!
    • 1.Rxd6+?
      • 1...Kc3
        • 2.Qb2#
      • 1...Kxe4
        • 2.Sdf2#
        • 2.Sc5#
        • 2.Sgf2#
        • 2.Sf6#
        • 2.Re1#
        • 2.Qe3#
        • 2.Qf4#
      • 1...Sxd6!
    • 1.Qb2+?
      • 1...Kxe4
        • 2.Sdf2#
      • 1...Sc3!
    • 1.Qa1+?
      • 1...Kxe4
        • 2.Sdf2#
      • 1...Sc3!
  • Keys
    • 1.Bg7!
      • threat
        • 2.Re6#
      • 1...Kc3
        • 2.Qb2#
      • 1...Kxe4
        • 2.Sdf2#
      • 1...Qxd1
        • 2.Rxd6#
      • 1...Qxe4
        • 2.Rxd6#
      • 1...Qxd3
        • 2.Rxf5#
      • 1...Bxe4
        • 2.Rf5#
      • 1...Bxg4
        • 2.Rf4#
      • 1...cxd1Q
        • 2.Qc4#
      • 1...cxd1S
        • 2.Qc4#
      • 1...cxd1B
        • 2.Qc4#
      • 1...cxd1R
        • 2.Qc4#
      • 1...Qg3
        • 2.Rxd6#
      • 1...Qf4
        • 2.Rxd6#
      • 1...Be6
        • 2.Rf4#
      • 1...Bd7
        • 2.Rf4#
      • 1...Bc8
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • K(c);N_GUARD,P_SPINP(a),S_CUTS(d),S_FLIGHT::QAB1(A)
    • K(c);N_GUARD,P-FLIGHT,P_SPINQ(b),S_CUTP(a),S_CUTP(a),S_CUTP(a),S_CUTP(a),XP(F)::S(E)
    • P(a);OGATE,XR(B)::QAR1(A)
  • Tries
    • Try
      • B(I);CHECK
      • Vars
        • K(c);N_GUARD,P_SPINP(a),S_FLIGHT::QAB1(A)
        • K(c);N_GUARD,P-FLIGHT,P_SPINQ(b),XP(F)::S(E)
      • Refutation
        • Q(b);XB(I)
    • Try
      • R(H);CHECK,XP(f)
      • Vars
        • K(c);N_GUARD,P_SPINP(a),S_FLIGHT::QAB1(A)
      • Refutation
        • S(d);XR(H)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);N_GUARD,P-FLIGHT,P_SPINQ(b),XP(F)::S(E)
      • Refutation
        • S(d);P_SPINS(d)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);N_GUARD,P-FLIGHT,P_SPINQ(b),XP(F)::S(E)
      • Refutation
        • S(d);P_SPINS(d)
  • Actual
    • B(I);
    • Threat
      • B(I)+R(H)
    • Vars
      • K(c);N_GUARD,P_SPINP(a),S_CUTS(d),S_FLIGHT::QAB1(A)
      • K(c);N_GUARD,P-FLIGHT,P_SPINQ(b),S_CUTP(a),S_CUTP(a),S_CUTP(a),S_CUTP(a),XP(F)::S(E)
      • Q(b);XR(B)::B(I)+R(H),DCHECK,XP(f)
      • Q(b);XP(F)::B(I)+R(H),DCHECK,XP(f)
      • Q(b);P_SPINQ(b),XS(E)::B(I)+R(H),XB(e)
      • B(e);P_PINR(H),SBLOCK,XP(F)::B(I)+R(H)
      • B(e);OGATE,P_PINR(H),XS(G)::B(I)+R(H)
      • P(a);OGATE,XR(B)::QAR1(A)
      • Q(b);::B(I)+R(H),DCHECK,XP(f)
      • B(e);OGATE,P_PINR(H)::B(I)+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).