MESON Chess Problem Database

Problem Display
PID: 256469 (q3B3/1PPQp3/1Rp5/pp1Np3/k5bR/rp3P2/rP6/n2K4 w - - 0 1)

Tkachenko, Sergiy Ivanovich

Sachova skladba, 2021

q3B3/1PPQp3/1Rp5/pp1Np3/k5bR/rp3P2/rP6/n2K4

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Qxc6#
    • 1...cxd5
      • 2.Qxb5#
    • 1...c5
      • 2.Qxb5#
  • Tries
    • 1.Rxg4+?
      • 1...b4
        • 2.Sc3#
        • 2.Qxc6#
      • 1...e4!
    • 1.Rxc6?
      • threat
        • 2.Rc4#
      • 1...b4
        • 2.Re6#
      • 1...Sc2!
    • 1.Qxg4+?
      • 1...b4
        • 2.Sc3#
        • 2.Bxc6#
      • 1...e4!
    • 1.Qxc6?
      • threat
        • 2.Qxb5#
        • 2.Qc4#
      • 1...Qa6
        • 2.Qc4#
      • 1...Sc2
        • 2.Qxb5#
      • 1...Qxe8!
    • 1.Qd6?
      • threat
        • 2.Sc3#
      • 1...cxd5
        • 2.Bxb5#
      • 1...b4
        • 2.Bxc6#
        • 2.Qxc6#
      • 1...c5
        • 2.Bxb5#
      • 1...exd6!
    • 1.Qxe7?
      • threat
        • 2.Sc3#
      • 1...cxd5
        • 2.Bxb5#
      • 1...b4
        • 2.Bxc6#
      • 1...c5
        • 2.Bxb5#
      • 1...Qd8!
  • Keys
    • 1.Rxb5!
      • threat
        • 2.Sc3#
      • 1...Kxb5
        • 2.Qxc6#
      • 1...cxb5
        • 2.Qxb5#
      • 1...cxd5
        • 2.Rb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • P(h);N_SPINB(f),OGATEB,P_SPINP(j)::QAB(I),XP(j)
    • P(j);OGATE,P_SPINP(h),XS(E)::QAB1(I),XP(h)
    • P(j);OGATE,P_SPINP(h)::QAB1(I),XP(h)
  • Tries
    • Try
      • R(D);CHECK,N_SPINP(C),XB(f)
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • R(F);XP(j)
      • Threat
        • R(F)
      • Vars
        • P(h);N_SPINB(f),OGATEB::QAB(I)+R(F)
      • Refutation
        • S(a);
    • Try
      • Q(I);CHECK,N_SPINP(C),XB(f)
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • Q(I);P_PINP(h),XP(j)
      • Threat
        • DUALS(2)
      • Vars
        • Q(l);::QAR2(I)
        • S(a);::QAB1(I),XP(h)
      • Refutation
        • Q(l);XB(J)
    • Try
      • Q(I);
      • Threat
        • S(E)
      • Vars
        • P(j);OGATE,P_SPINP(h),XS(E)::B(J),XP(h)
        • P(j);OGATE,P_SPINP(h)::B(J),XP(h)
      • Refutation
        • P(k);XQ(I)
    • Try
      • Q(I);XP(k)
      • Threat
        • S(E)
      • Vars
        • P(j);OGATE,P_SPINP(h),XS(E)::B(J),XP(h)
        • P(h);N_SPINB(f),OGATEB,P_SPINP(j)::B(J),XP(j)
        • P(j);OGATE,P_SPINP(h)::B(J),XP(h)
      • Refutation
        • Q(l);P_PINS(E)
  • Actual
    • R(F);XP(h)
    • Threat
      • S(E)
    • Vars
      • K(e);N_SPINB(f),OGATEB,P_SPINP(j),S_FLIGHT,XR(F)::QAB1(I),XP(j)
      • P(j);OGATE,P_SPINP(j),XR(F)::QAB1(I),XP(j)
      • P(j);OGATEB,XS(E)::QAB(I)+R(F)
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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).