MESON Chess Problem Database

Problem Display
PID: 133564 (3n4/qpR3b1/P2Q2p1/1p1P4/3k1pN1/1p1P3R/1KB5/8 w - - 0 1)

Rice, John Michael

4th Prize, StrateGems, 2009

3n4/qpR3b1/P2Q2p1/1p1P4/3k1pN1/1p1P3R/1KB5/8

#2

9 + 9

145 StrateGems 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Qxc5#
    • 1...Qb8
      • 2.Qc5#
    • 1...Qxa6
      • 2.Qc5#
    • 1...Qa8
      • 2.Qc5#
    • 1...Be5
      • 2.Qxe5#
    • 1...Bh6
      • 2.Qe5#
    • 1...Bf8
      • 2.Qe5#
    • 1...Sc6
      • 2.dxc6#
    • 1...Se6
      • 2.dxe6#
    • 1...b4
      • 2.Rc4#
  • Tries
    • 1.Bxb3?
      • threat
        • 2.Qb4#
        • 2.Qxf4#
      • 1...Qc5
        • 2.Qxf4#
        • 2.Qxc5#
      • 1...Be5
        • 2.Qb4#
        • 2.Qxe5#
      • 1...Bh6
        • 2.Qb4#
        • 2.Qe5#
        • 2.Qf6#
      • 1...Bf8
        • 2.Qxf4#
        • 2.Qe5#
        • 2.Qf6#
      • 1...Sc6
        • 2.dxc6#
      • 1...Se6
        • 2.Qb4#
        • 2.dxe6#
      • 1...b4
        • 2.Rc4#
        • 2.Qxb4#
        • 2.Qxf4#
      • 1...g5
        • 2.Qb4#
      • 1...f3!
    • 1.Rd7?
      • threat
        • 2.Qb4#
      • 1...Qc5
        • 2.Qxf4#
      • 1...Sc6
        • 2.dxc6#
      • 1...b4
        • 2.Qxb4#
      • 1...Bf8!
    • 1.Re7?
      • threat
        • 2.Re4#
      • 1...Se6
        • 2.dxe6#
      • 1...Be5!
    • 1.Qf6+?
      • 1...Kxd5
        • 2.Bxb3#
      • 1...Bxf6!
  • Keys
    • 1.Se3!
      • threat
        • 2.Qxf4#
      • 1...bxc2
        • 2.Sxc2#
      • 1...fxe3
        • 2.Rh4#
      • 1...f3
        • 2.Qf4#
      • 1...Be5
        • 2.Qb4#
      • 1...Bh6
        • 2.Qf6#
      • 1...Sc6
        • 2.dxc6#
      • 1...Se6
        • 2.dxe6#
      • 1...g5
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • Q(f);N_GUARD::QAB1(H),XQ(f)
    • Q(f);N_GUARD::QAB1(H)
    • Q(f);N_GUARD,XP(G)::QAB1(H)
    • B(h);N_GUARD::QAB1(H),XB(h)
    • B(h);N_GUARD::QAB1(H)
    • S(i);OGATE::QAR(H)+P(F),XS(i)
    • P(d);N_GUARD::R1(I)
  • Tries
    • Try
      • B(B);XP(a)
      • Threat
        • DUALS(2)
      • Vars
        • S(i);OGATE::QAR(H)+P(F),XS(i)
        • P(e);::QAR2(H)
      • Refutation
        • P(c);
    • Try
      • R(I);
      • Threat
        • QAR2(H)
      • Vars
        • Q(f);SBLOCK::QAR2(H),XP(c)
        • S(i);OGATE::QAR(H)+P(F),XS(i)
        • P(d);::QAR2(H),XP(d)
      • Refutation
        • B(h);
    • Try
      • R(I);
      • Threat
        • R1(I)
      • Vars
        • S(i);OGATE::QAR(H)+P(F),XS(i)
      • Refutation
        • B(h);
    • Try
      • Q(H);CHECK
      • Vars
        • K(b);P-FLIGHT,P_PINQ(H),XP(F)::B(B),XP(a)
      • Refutation
        • B(h);XQ(H)
  • Actual
    • S(E);
    • Threat
      • QAR2(H),XP(c)
    • Vars
      • P(a);XB(B)::S(E),XP(a)
      • P(c);OGATEB,SBLOCK,XS(E)::R(D)
      • P(c);::QAR2(H)
      • B(h);SBLOCK::QAR2(H)
      • B(h);N_GUARD::QAB(H)
      • S(i);OGATE::QAR(H)+P(F),XS(i)
      • P(e);N_GUARD::S(E)
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).