MESON Chess Problem Database

Problem Display
PID: 101234 (6B1/5N2/2p1rP2/1R1np1K1/2k1Pp2/qRN1P1p1/1b3r2/3Q4 w - - 0 1)

Sim, Malcolm

Good Companions, 1922

6B1/5N2/2p1rP2/1R1np1K1/2k1Pp2/qRN1P1p1/1b3r2/3Q4

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Qe2#
      • 2.Qxf1#
    • 1...Re2
      • 2.Qxe2#
    • 1...Rf3
      • 2.Qe2#
    • 1...Rd6
      • 2.Sxe5#
    • 1...Rxf6
      • 2.Sxe5#
    • 1...Sxc3
      • 2.Sxe5#
    • 1...Sxe3
      • 2.Sxe5#
    • 1...Sb4
      • 2.Sxe5#
      • 2.Sd6#
    • 1...Sb6
      • 2.Sxe5#
    • 1...Sxf6
      • 2.Sxe5#
    • 1...Sc7
      • 2.Sxe5#
    • 1...Se7
      • 2.Sxe5#
    • 1...cxb5
      • 2.Qxd5#
    • 1...c5
      • 2.Qxd5#
  • Tries
    • 1.Se2?
      • threat
        • 2.Qd3#
      • 1...Qxb3
        • 2.Qxb3#
      • 1...cxb5
        • 2.Qxd5#
      • 1...Sb4
        • 2.Sd6#
      • 1...Sc3
        • 2.Sxe5#
      • 1...Bc3!
    • 1.Sxd5?
      • threat
        • 2.Sb6#
        • 2.Qd3#
      • 1...Qxb3
        • 2.Qxb3#
      • 1...cxd5
        • 2.Qd3#
        • 2.Qxd5#
      • 1...Qb4
        • 2.R3xb4#
        • 2.Qd3#
      • 1...Bc3
        • 2.Sb6#
      • 1...Qc5
        • 2.Qd3#
      • 1...Qa5
        • 2.Qd3#
      • 1...Qa6
        • 2.R3b4#
        • 2.Qd3#
      • 1...Qa7
        • 2.R3b4#
        • 2.Qd3#
      • 1...Rd2
        • 2.Sb6#
      • 1...Bd4
        • 2.Qd3#
      • 1...c5
        • 2.Qd3#
      • 1...cxb5!
    • 1.Qf1+?
      • 1...Re2
        • 2.Qxe2#
      • 1...Rxf1!
  • Keys
    • 1.Sb1!
      • threat
        • 2.Qd3#
      • 1...Qxb3
        • 2.Qxb3#
      • 1...cxb5
        • 2.Qxd5#
      • 1...Sb4
        • 2.Sd6#
      • 1...Rd2
        • 2.Sxd2#
      • 1...Bc3
        • 2.Sxa3#
      • 1...Sc3
        • 2.Sxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 10
  • Sets
    • R(b);N_GUARD::QAB(A),XR(b)
    • R(b);N_GUARD::QAB(A)
    • R(j);N_GUARD::S(I),XP(h)
    • R(j);N_GUARD,XP(H)::S(I),XP(h)
    • S(g);S_CUTR(j),XS(C)::S(I),XP(h)
    • S(g);S_CUTR(j),XP(D)::S(I),XP(h)
    • S(g);S_CUTR(j)::S(I),XP(h)
    • S(g);S_CUTR(j),XP(H)::S(I),XP(h)
    • P(i);N_GUARD,XR(F)::QAB1(A),XS(g)
    • P(i);N_GUARD::QAB1(A),XS(g)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(A)
      • Vars
        • Q(c);OGATE,XR(B)::QAB1(A),XQ(c)
        • P(i);N_GUARD,XR(F)::QAB1(A),XS(g)
        • S(g);S_CUTQ(c),S_CUTR(j)::S(I)
        • S(g);S_CUTB(a),S_CUTR(j)::S(I),XP(h)
      • Refutation
        • B(a);
    • Try
      • S(C);XS(g)
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);OGATE,XR(B)::QAB1(A),XQ(c)
        • B(a);::S(C)
        • Q(c);::QAB1(A)
        • R(b);::S(C)
        • B(a);::QAB1(A)
        • P(i);::QAB1(A)
      • Refutation
        • P(i);XR(F)
    • Try
      • Q(A);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB(A),XR(b)
      • Refutation
        • R(b);XQ(A)
  • Actual
    • S(C);
    • Threat
      • QAB1(A)
    • Vars
      • Q(c);OGATE,XR(B)::QAB1(A),XQ(c)
      • P(i);N_GUARD,XR(F)::QAB1(A),XS(g)
      • S(g);S_CUTQ(c),S_CUTR(j)::S(I)
      • R(b);N_GUARD::S(C),XR(b)
      • B(a);N_GUARD::S(C),XQ(c)
      • S(g);S_CUTB(a),S_CUTR(j)::S(I),XP(h)
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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).