MESON Chess Problem Database

Problem Display
PID: 229898 (8/7Q/b4K2/2RpP2p/1Ppk1p2/Np5R/1P1pP3/1n1N2b1 w - - 0 1)

Korenev, Valery Ivanovich

Zadachi i Etyudi, 2000

8/7Q/b4K2/2RpP2p/1Ppk1p2/Np5R/1P1pP3/1n1N2b1

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bb5
      • 2.Sxb5#
    • 1...Bb7
      • 2.Sb5#
    • 1...Bc8
      • 2.Sb5#
    • 1...Sc3
      • 2.bxc3#
    • 1...f3
      • 2.Rh4#
  • Tries
    • 1.Ke6?
      • threat
        • 2.Rxd5#
      • 1...Bb7
        • 2.Sb5#
      • 1...Sc3
        • 2.bxc3#
      • 1...Bc8+!
    • 1.Sc3?
      • threat
        • 2.Rxd5#
      • 1...Sxc3
        • 2.bxc3#
      • 1...Bb7
        • 2.Sab5#
        • 2.Scb5#
      • 1...f3!
    • 1.Rh4?
      • threat
        • 2.Rxf4#
      • 1...Bh2
        • 2.e3#
      • 1...Sc3
        • 2.bxc3#
      • 1...Be3!
    • 1.Qd7?
      • threat
        • 2.Qxd5#
      • 1...Ke4
        • 2.Qxd5#
      • 1...Bb7
        • 2.Rxc4#
      • 1...Sc3!
    • 1.e3+?
      • 1...fxe3
        • 2.Rh4#
      • 1...Bxe3!
  • Keys
    • 1.e4!
      • threat
        • 2.Rxd5#
      • 1...dxe4
        • 2.Qd7#
      • 1...fxe4 ep
        • 2.Rh4#
      • 1...Bb7
        • 2.Sb5#
      • 1...Sc3
        • 2.bxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(j);N_GUARD::S(D),XB(j)
    • B(j);N_GUARD::S(D)
    • S(a);OGATE::P(B),XS(a)
    • P(g);OGATEB::R(E)
  • Tries
    • Try
      • K(I);P-FLIGHT
      • Threat
        • R1(G),XP(h)
      • Vars
        • B(j);N_GUARD::S(D)
        • S(a);OGATE::P(B),XS(a)
      • Refutation
        • B(j);CHECK
    • Try
      • S(A);
      • Threat
        • R1(G),XP(h)
      • Vars
        • S(a);OGATE,XS(A)::P(B),XS(a)
      • Refutation
        • P(g);
    • Try
      • R(E);P_PINP(g)
      • Threat
        • R(E),XP(g)
      • Vars
        • B(b);N_GUARD::P(C)
        • S(a);OGATE::P(B),XS(a)
      • Refutation
        • B(b);
    • Try
      • Q(J);P_PINP(h)
      • Threat
        • QAR1(J),XP(h)
      • Vars
        • K(f);N_SPINP(h),P-FLIGHT::QAB1(J),XP(h)
        • B(j);N_GUARD::R1(G),XP(e)
      • Refutation
        • S(a);
    • Try
      • P(C);CHECK
      • Vars
        • P(g);S_CUTB(b),XP(C)::R(E)
      • Refutation
        • B(b);XP(C)
  • Actual
    • P(C);
    • Threat
      • R1(G),XP(h)
    • Vars
      • P(h);OGATEB,SBLOCK,XP(C)::QAR(J)
      • P(g);EP,OGATEB,XP(C)::R(E)
      • B(j);N_GUARD::S(D)
      • S(a);OGATE::P(B),XS(a)
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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).