MESON Chess Problem Database

Problem Display
PID: 287237 (K1R5/5pr1/1p1N1Bpb/Q2Pp2p/nnPk1N1r/3p1p2/P4P2/qB1R4 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Problem Paradise, 2022

K1R5/5pr1/1p1N1Bpb/Q2Pp2p/nnPk1N1r/3p1p2/P4P2/qB1R4

#2

12 + 14

15601 Albrecht-Leiss-Degener Collection 2026

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Bxe5#
    • 1...Sc3
      • 2.Qxb6#
    • 1...Sxa2
      • 2.Rxd3#
    • 1...Sc2
      • 2.Rxd3#
    • 1...Sxd5
      • 2.Rxd3#
    • 1...Sa6
      • 2.Rxd3#
    • 1...Sc6
      • 2.Rxd3#
    • 1...d2
      • 2.Sb5#
  • Tries
    • 1.Sxd3?
      • threat
        • 2.Bxe5#
      • 1...Kc3
        • 2.Sb5#
      • 1...Sxd3
        • 2.Rxd3#
      • 1...Re4
        • 2.Sb5#
      • 1...Sc6
        • 2.Sf4#
      • 1...Bf4!
    • 1.Re1?
      • threat
        • 2.Sb5#
        • 2.Bxe5#
      • 1...Bxf4
        • 2.Sb5#
      • 1...Sc3
        • 2.Bxe5#
        • 2.Qxb6#
      • 1...Sc5
        • 2.Bxe5#
      • 1...Sc6
        • 2.Re4#
      • 1...b5
        • 2.Sxb5#
        • 2.Bxe5#
      • 1...Kc3!
  • Keys
    • 1.Bxd3!
      • threat
        • 2.Sb5#
      • 1...Kc3
        • 2.Bxe5#
      • 1...Sxd3
        • 2.Rxd3#
      • 1...Sc3
        • 2.Qxb6#
      • 1...Sc6
        • 2.Bb1#
      • 1...b5
        • 2.Sxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • K(f);N_GUARD,N_SPINP(b),P_SPINP(h),P_SPINS(e),S_FLIGHT::B(J),XP(h)
    • S(d);N_GUARD,SBLOCK::QAB(G),XP(j)
    • S(e);N_GUARD,XP(C)::R1(B),XP(b)
    • S(e);N_GUARD::R1(B),XP(b)
    • S(e);N_GUARD,XP(H)::R1(B),XP(b)
    • P(b);::S(I)
  • Tries
    • Try
      • S(F);P_PINP(h),XP(b)
      • Threat
        • B(J),XP(h)
      • Vars
        • K(f);N_GUARD,P_SPINS(e),S_FLIGHT::S(I)
        • S(e);OGATE,P_SPINS(e),XS(F)::R1(B),XS(e)
        • R(g);SBLOCK::S(I)
        • S(e);N_GUARD::R(B)+S(F)
      • Refutation
        • B(l);
    • Try
      • R(B);N_PINP(b),P_PINP(h)
      • Threat
        • DUALS(2)
      • Vars
        • B(l);XS(F)::S(I)
        • S(d);::B(J),XP(h)
        • S(e);::R1(B)
      • Refutation
        • K(f);P_SPINS(e),S_FLIGHT
  • Actual
    • B(A);P_PINP(h),XP(b)
    • Threat
      • S(I)
    • Vars
      • K(f);N_GUARD,P_SPINS(e),S_FLIGHT::B(J),XP(h)
      • S(e);OGATE,P_SPINS(e),XB(A)::R1(B),XS(e)
      • S(d);N_GUARD,SBLOCK::QAB(G),XP(j)
      • S(e);N_GUARD::R(B)+B(A)
      • P(j);::S(I),XP(j)
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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).