MESON Chess Problem Database

Problem Display
PID: 70920 (b2R1R2/8/r1pN1P2/3Pk3/p1p2p2/1p1pNK1B/3B1Q2/q1n5 w - - 0 1)

Kirillov, Valery Afanasievich

Maslov, Boris Grigorevich

Mishko, Mikhail

Probleemblad, 2006

b2R1R2/8/r1pN1P2/3Pk3/p1p2p2/1p1pNK1B/3B1Q2/q1n5

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Bxc3#
    • 1...Qb1
      • 2.Bc3#
    • 1...Qa2
      • 2.Bc3#
    • 1...Qa3
      • 2.Bc3#
    • 1...b2
      • 2.Bc3#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Sxc4#
      • 1...Kxd5
        • 2.Sf7#
      • 1...cxd5
        • 2.Bxf4#
      • 1...Qd4
        • 2.Qxd4#
      • 1...c3
        • 2.Sc4#
        • 2.Qd4#
      • 1...Qc3!
    • 1.Sdf5?
      • threat
        • 2.Sxc4#
        • 2.Rde8#
      • 1...fxe3
        • 2.Qxe3#
        • 2.Qg3#
        • 2.Qh2#
      • 1...Qc3
        • 2.Bxc3#
        • 2.Rde8#
      • 1...Qd4
        • 2.Rde8#
      • 1...Qa3
        • 2.Sxc4#
        • 2.Bc3#
      • 1...Ra7
        • 2.Sxc4#
      • 1...c3
        • 2.Sc4#
        • 2.Rde8#
      • 1...c5
        • 2.Sxc4#
      • 1...cxd5!
    • 1.Sf7+?
      • 1...Kd4
        • 2.Sd1#
        • 2.Sf1#
        • 2.Sc2#
        • 2.Sg2#
        • 2.Sg4#
        • 2.Sf5#
      • 1...Kxf6!
    • 1.Sc8?
      • threat
        • 2.Sxc4#
      • 1...Kd4
        • 2.Sg4#
      • 1...fxe3
        • 2.Qxe3#
      • 1...Qc3
        • 2.Bxc3#
      • 1...Qd4
        • 2.Rde8#
      • 1...c3
        • 2.Sc4#
      • 1...cxd5!
    • 1.Be6?
      • threat
        • 2.Sexc4#
        • 2.Sg4#
      • 1...Kd4
        • 2.Sexc4#
        • 2.Sg4#
      • 1...fxe3
        • 2.Qxe3#
      • 1...Qc3
        • 2.Sg4#
        • 2.Bxc3#
      • 1...Qd4
        • 2.Sg4#
      • 1...c3
        • 2.Sec4#
        • 2.Sg4#
      • 1...cxd5!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Sxc4#
      • 1...Kd4
        • 2.Sg4#
      • 1...fxe3
        • 2.Qxe3#
      • 1...cxd5
        • 2.Rxd5#
      • 1...Qc3
        • 2.Bxc3#
      • 1...Qd4
        • 2.Rde8#
      • 1...c3
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • Q(a);N_GUARD::B(A),XQ(a)
    • Q(a);N_GUARD::B(A)
    • P(c);S_CUTQ(a)::B(A)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(G),XP(f)
      • Vars
        • K(h);P-FLIGHT,XP(F)::R(I)+S(G)
        • P(j);SBLOCK,XP(F)::B(A),XP(g)
        • Q(a);N_GUARD::QAB1(B),XQ(a)
      • Refutation
        • Q(a);
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);::R(I)
        • R(i);::S(C),XP(f)
        • P(j);P_PINP(F)::S(C),XP(f)
      • Refutation
        • P(j);XP(F)
    • Try
      • S(G);CHECK
      • Refutation
        • K(h);S_FLIGHT,XP(H)
    • Try
      • S(G);
      • Threat
        • S(C),XP(f)
      • Vars
        • K(h);S_FLIGHT::QAB(B)+S(C)
        • P(g);OGATE,XS(C)::QAR2(B),XP(g)
        • Q(a);N_GUARD::B(A),XQ(a)
        • Q(a);SBLOCK::R(I)
        • P(f);::S(C)
      • Refutation
        • P(j);XP(F)
    • Try
      • B(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(g);OGATE,XS(C)::QAR2(B),XP(g)
        • Q(a);::S(C)
      • Refutation
        • P(j);XP(F)
  • Actual
    • S(G);
    • Threat
      • S(C),XP(f)
    • Vars
      • K(h);S_FLIGHT::QAB(B)+S(C)
      • P(g);OGATE,XS(C)::QAR2(B),XP(g)
      • P(j);OGATE,XP(F)::R1(I),XP(j)
      • Q(a);N_GUARD::B(A),XQ(a)
      • Q(a);SBLOCK::R(I)
      • P(f);::S(C)
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).