MESON Chess Problem Database

Problem Display
PID: 179031 (5R2/2pR4/K1B1k1p1/1np1p3/Np3P2/8/nb2Q3/q1r2br1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Magasinet, 1940

5R2/2pR4/K1B1k1p1/1np1p3/Np3P2/8/nb2Q3/q1r2br1

#2

7 + 13

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Sxc5#
    • 1...Rd1
      • 2.Sxc5#
    • 1...Re1
      • 2.Sxc5#
    • 1...Rc3
      • 2.Qxe5#
    • 1...Rh1
      • 2.Qg4#
    • 1...Rg4
      • 2.Qxg4#
    • 1...Bg2
      • 2.Qg4#
    • 1...Bc3
      • 2.Sxc5#
    • 1...Sac3
      • 2.Qxe5#
    • 1...Sbc3
      • 2.Sxc5#
    • 1...c4
      • 2.Sc5#
    • 1...g5
      • 2.f5#
  • Tries
    • 1.Re8+?
      • 1...Kf5
        • 2.Rf7#
      • 1...Kf6!
    • 1.Qc4+?
      • 1...Bxc4
        • 2.Sxc5#
      • 1...Rxc4!
  • Keys
    • 1.Rff7!
      • threat
        • 2.Bd5#
      • 1...Rd1
        • 2.Sxc5#
      • 1...Bg2
        • 2.Qg4#
      • 1...Sac3
        • 2.Qxe5#
      • 1...Sbc3
        • 2.Sxc5#
      • 1...Sd6
        • 2.Rde7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • R(b);N_GUARD::S(B),XP(i)
    • R(b);S_CUTB(f)::QAR1(A),XP(j)
    • R(d);N_GUARD::QAB(A)
    • R(d);N_GUARD::QAB(A),XR(d)
    • B(c);S_CUTR(d)::QAB(A)
    • B(f);S_CUTR(b)::S(B),XP(i)
    • S(e);P_PINS(B),S_CUTB(f)::QAR1(A),XP(j)
    • S(h);P_PINQ(A),S_CUTR(b)::S(B),XP(i)
    • P(i);S_CUTR(b)::S(B)
    • P(l);N_GUARD::P(C)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(k);N_SPINP(j),S_FLIGHT::R(F)
      • Refutation
        • K(k);N_SPINP(j),P-FLIGHT
    • Try
      • Q(A);CHECK,N_PINP(j)
      • Vars
        • B(c);XQ(A)::S(B),XP(i)
      • Refutation
        • R(b);XQ(A)
  • Actual
    • R(G);
    • Threat
      • B(E)
    • Vars
      • R(b);N_GUARD::S(B),XP(i)
      • B(c);S_CUTR(d)::QAB(A)
      • S(e);P_PINS(B),S_CUTB(f)::QAR1(A),XP(j)
      • S(h);P_PINQ(A),S_CUTR(b)::S(B),XP(i)
      • S(h);P_PINQ(A),SBLOCK::R1(F)
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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).