MESON Chess Problem Database

Problem Display
PID: 260989 (3bB3/B5q1/p2N2p1/k1Ppn3/P2R4/1R1p4/3N4/2K5 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Neue Zurcher Zeitung, 1974

3bB3/B5q1/p2N2p1/k1Ppn3/P2R4/1R1p4/3N4/2K5

#2

9 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qf6
      • 2.Sb7#
    • 1...Qh6
      • 2.Sb7#
    • 1...Qf8
      • 2.Sb7#
    • 1...Qh8
      • 2.Sb7#
    • 1...Qb7
      • 2.Sxb7#
    • 1...Qg8
      • 2.Sb7#
    • 1...Bh4
      • 2.Bb6#
    • 1...Bg5
      • 2.Bb6#
    • 1...Bb6
      • 2.Bxb6#
    • 1...Bf6
      • 2.Bb6#
    • 1...Bc7
      • 2.Sb7#
    • 1...Be7
      • 2.Sb7#
      • 2.Bb6#
    • 1...Sd7
      • 2.Sb7#
    • 1...Sf7
      • 2.Sb7#
  • Tries
    • 1.Rb1?
      • threat
        • 2.Sb3#
      • 1...Qh6
        • 2.Sb7#
      • 1...Qb7
        • 2.Sxb7#
      • 1...Bg5
        • 2.Bb6#
      • 1...Sc4!
    • 1.Rb2?
      • threat
        • 2.Sb3#
      • 1...Qh6
        • 2.Sb7#
      • 1...Qb7
        • 2.Sxb7#
      • 1...Bg5
        • 2.Bb6#
      • 1...Sc4!
    • 1.Ra3?
      • threat
        • 2.Sb3#
      • 1...Qh6
        • 2.Sb7#
      • 1...Qb7
        • 2.Sxb7#
      • 1...Bg5
        • 2.Bb6#
      • 1...Sc4!
    • 1.Rc3?
      • threat
        • 2.Sb3#
      • 1...Qh6
        • 2.Sb7#
      • 1...Qb7
        • 2.Sxb7#
      • 1...Bg5
        • 2.Bb6#
      • 1...Sc4!
    • 1.Rbb4?
      • threat
        • 2.Sb3#
      • 1...Qh6
        • 2.Sb7#
      • 1...Bg5
        • 2.Bb6#
      • 1...Sc4!
    • 1.Rb6?
      • threat
        • 2.Sb3#
      • 1...Qh6
        • 2.Sb7#
      • 1...Bg5!
    • 1.Rb7?
      • threat
        • 2.Sb3#
      • 1...Qxb7
        • 2.Sxb7#
      • 1...Bg5
        • 2.Bb6#
      • 1...Qh6!
  • Keys
    • 1.Rb8!
      • threat
        • 2.Sb3#
      • 1...Qh6
        • 2.Sb7#
      • 1...Qb7
        • 2.Sxb7#
      • 1...Bg5
        • 2.Bb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 10
  • Sets
    • Q(g);N_GUARD::S(G)
    • Q(g);N_GUARD,P_PINS(B)::S(G)
    • Q(g);N_GUARD::S(G),XQ(g)
    • B(h);N_GUARD::B(H)
    • B(h);N_GUARD,P_PINS(B)::B(H)
    • B(h);N_GUARD::B(H),XB(h)
    • B(h);S_CUTQ(g)::S(G)
    • S(d);S_CUTQ(g)::S(G)
  • Tries
    • Try
      • R(C);
      • Threat
        • S(B)
      • Vars
        • Q(g);N_GUARD,P_PINS(B)::S(G)
        • Q(g);N_GUARD::S(G),XQ(g)
        • B(h);N_GUARD,P_PINS(B)::B(H)
      • Refutation
        • S(d);
    • Try
      • R(C);
      • Threat
        • S(B)
      • Vars
        • Q(g);N_GUARD,P_PINS(B)::S(G)
        • Q(g);N_GUARD::S(G),XQ(g)
        • B(h);N_GUARD,P_PINS(B)::B(H)
      • Refutation
        • S(d);
    • Try
      • R(C);
      • Threat
        • S(B)
      • Vars
        • Q(g);N_GUARD,P_PINS(B)::S(G)
        • Q(g);N_GUARD::S(G),XQ(g)
        • B(h);N_GUARD,P_PINS(B)::B(H)
      • Refutation
        • S(d);
    • Try
      • R(C);
      • Threat
        • S(B)
      • Vars
        • Q(g);N_GUARD,P_PINS(B)::S(G)
        • Q(g);N_GUARD::S(G),XQ(g)
        • B(h);N_GUARD,P_PINS(B)::B(H)
      • Refutation
        • S(d);
    • Try
      • R(C);
      • Threat
        • S(B)
      • Vars
        • Q(g);N_GUARD,P_PINS(B)::S(G)
        • B(h);N_GUARD,P_PINS(B)::B(H)
      • Refutation
        • S(d);
    • Try
      • R(C);
      • Threat
        • S(B)
      • Vars
        • Q(g);N_GUARD,P_PINS(B)::S(G)
      • Refutation
        • B(h);P_PINS(B)
    • Try
      • R(C);
      • Threat
        • S(B)
      • Vars
        • Q(g);XR(C)::S(G),XQ(g)
        • B(h);N_GUARD,P_PINS(B)::B(H)
      • Refutation
        • Q(g);P_PINS(B)
  • Actual
    • R(C);
    • Threat
      • S(B)
    • Vars
      • Q(g);N_GUARD,P_PINS(B)::S(G)
      • Q(g);N_GUARD::S(G),XQ(g)
      • B(h);N_GUARD,P_PINS(B)::B(H)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).