MESON Chess Problem Database

Problem Display
PID: 39684 (4nB2/1K1pp3/3p4/1pk2p2/RN3Q2/3P1P2/1pP1p1p1/3n1B2 w - - 0 1)

Rice, John Michael

The Problemist, 2001

4nB2/1K1pp3/3p4/1pk2p2/RN3Q2/3P1P2/1pP1p1p1/3n1B2

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Qe3#
    • 1...Sc3
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...e1Q
      • 2.d4#
    • 1...e1S
      • 2.d4#
    • 1...e1B
      • 2.d4#
    • 1...e1R
      • 2.d4#
    • 1...bxa4
      • 2.Qc4#
    • 1...d5
      • 2.Sa6#
    • 1...e5
      • 2.Qxe5#
    • 1...e6
      • 2.Qe5#
  • Tries
    • 1.Ra5?
      • threat
        • 2.Qc4#
      • 1...d5
        • 2.Sa6#
      • 1...Se3!
    • 1.Qe5+?
      • 1...d5
        • 2.Sa6#
        • 2.Qxd5#
      • 1...dxe5!
    • 1.Qxf5+?
      • 1...d5
        • 2.Qxd5#
      • 1...e5
        • 2.Qxe5#
      • 1...Kd4!
    • 1.c4?
      • threat
        • 2.Sa6#
      • 1...bxc4
        • 2.Qxc4#
      • 1...Sc7!
  • Keys
    • 1.Bxe7!
      • threat
        • 2.Qe5#
      • 1...bxa4
        • 2.Qc4#
      • 1...e1Q
        • 2.d4#
      • 1...e1R
        • 2.d4#
      • 1...Sc3
        • 2.Qe3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sf6
        • 2.Bxd6#
        • 2.Qxd6#
      • 1...Sc7
        • 2.Bxd6#
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • S(a);N_GUARD::QAB(G)
    • S(a);N_GUARD::QAB(G),XS(a)
    • P(c);::P(C)
    • P(e);N_GUARD,XR(E)::QAR1(G)
    • P(h);P_SPINP(j),SBLOCK::S(F)
    • P(j);P_SPINP(h)::QAR2(G),XP(j)
    • P(j);P_SPINP(h)::QAR2(G)
  • Tries
    • Try
      • R(E);P_PINP(e)
      • Threat
        • QAR1(G)
      • Vars
        • P(h);SBLOCK::S(F)
      • Refutation
        • S(a);
    • Try
      • Q(G);CHECK
      • Refutation
        • P(h);P_SPINP(j),XQ(G)
    • Try
      • Q(G);CHECK,XP(g)
      • Vars
        • P(h);P_SPINP(h)::QAR1(G),XP(h)
        • P(j);P_SPINP(j),S_CUTP(h),S_CUTP(h)::QAR2(G),XP(j)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • P(B);
      • Threat
        • S(F)
      • Vars
        • P(e);OGATE,XP(B)::QAR1(G),XP(e)
      • Refutation
        • S(k);
  • Actual
    • B(I);P_PINP(h),XP(j)
    • Threat
      • QAR2(G)
    • Vars
      • P(e);N_GUARD,XR(E)::QAR1(G)
      • P(c);::P(C)
      • S(a);N_GUARD::QAB(G)
      • S(a);N_GUARD::QAB(G),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).