MESON Chess Problem Database

Problem Display
PID: 201494 (1B5N/K2pp3/1Q1r2p1/1bR1q2p/4nk1P/6nB/1b1P1pP1/2N2r2 w - - 0 1)

Reimann, Harald

L'Alfiere di Re, 1922

1B5N/K2pp3/1Q1r2p1/1bR1q2p/4nk1P/6nB/1b1P1pP1/2N2r2

#2

10 + 13

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Sxg6#
    • 1...Qd4
      • 2.Sxg6#
    • 1...Qxc5
      • 2.Sxg6#
    • 1...Qd5
      • 2.Sxg6#
    • 1...Rd3
      • 2.Sxg6#
    • 1...Rd4
      • 2.Sxg6#
      • 2.Bxe5#
    • 1...Rd5
      • 2.Sxg6#
    • 1...e6
      • 2.Sxg6#
  • Tries
    • 1.Sd3+?
      • 1...Rxd3
        • 2.Sxg6#
      • 1...Bxd3!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Qe3#
      • 1...Qxh8
        • 2.Sd3#
      • 1...Rxd2
        • 2.Sxg6#
      • 1...Rxb6
        • 2.Sd3#
      • 1...Qc3
        • 2.Sxg6#
      • 1...Qd4
        • 2.Sxg6#
      • 1...Qf6
        • 2.Sd3#
      • 1...Qg7
        • 2.Sd3#
      • 1...Qc5
        • 2.Sd3#
        • 2.Sxg6#
      • 1...Qd5
        • 2.Sxg6#
      • 1...Qf5
        • 2.Sd3#
      • 1...Qg5
        • 2.Sd3#
      • 1...Qe6
        • 2.Sd3#
      • 1...Sf5
        • 2.Se2#
      • 1...Re1
        • 2.Qxf2#
      • 1...Rd3
        • 2.Sxd3#
        • 2.Sxg6#
      • 1...Rd4
        • 2.Sxg6#
      • 1...Bd4
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 12
    • REMOVED MATES = 4
  • Sets
    • Q(h);P_SPINR(j)::S(J),XP(k)
    • Q(h);P_PINQ(G),P_SPINR(j),XR(F)::S(J),XP(k)
    • R(j);N_GUARD,P_SPINQ(h)::S(J),XP(k)
    • P(m);S_CUTR(j)::S(J),XP(k)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • R(j);P_SPINQ(h),XS(A)::S(J),XP(k)
      • Refutation
        • B(g);XS(A)
  • Actual
    • R(F);P_PINS(e)
    • Threat
      • QAB1(G)
    • Vars
      • Q(h);P_SPINR(j),XS(J)::S(A)
      • R(j);N_GUARD,P_SPINQ(h),XP(B)::S(J),XP(k)
      • R(j);N_GUARD,P_SPINQ(h),XQ(G)::S(A)
      • Q(h);P_SPINR(j)::S(J),XP(k)
      • Q(h);N_SPINS(e),P_PINQ(G),P_SPINR(j)::S(J),XP(k)
      • Q(h);P_SPINR(j)::S(A)
      • S(d);N_GUARD::S(A)
      • R(a);N_GUARD::QAR2(G),XP(c)
      • R(j);N_GUARD,N_SPINS(e),P_SPINQ(h)::S(J),XP(k)
      • B(b);N_SPINS(e),P_PINQ(G),S_CUTR(j)::S(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).