MESON Chess Problem Database

Problem Display
PID: 266132 (6nn/2N3KN/2p1R3/r2pPP2/4qkBR/3QbP2/1B5P/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Schweizerische Schachzeitung, 2017

6nn/2N3KN/2p1R3/r2pPP2/4qkBR/3QbP2/1B5P/8

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf5
      • 2.Qxf5#
    • 1...Qa4
      • 2.Bh5#
    • 1...Qb4
      • 2.Bh5#
    • 1...Qc4
      • 2.Bh5#
    • 1...Qd4
      • 2.Bh5#
    • 1...Qxe5+
      • 2.Bxe5#
    • 1...Bc1
      • 2.Bh3#
    • 1...Bg1
      • 2.Bh3#
    • 1...Bd2
      • 2.Bh3#
    • 1...Bd4
      • 2.Bh3#
    • 1...Bc5
      • 2.Bh3#
    • 1...Bb6
      • 2.Bh3#
    • 1...Ba7
      • 2.Bh3#
    • 1...d4
      • 2.Qxe4#
  • Tries
    • 1.Sxd5+?
      • 1...Qxd5
        • 2.Bh5#
      • 1...Rxd5
        • 2.Qxe4#
      • 1...cxd5!
    • 1.Re8?
      • threat
        • 2.Se6#
      • 1...Qxe5+
        • 2.Bxe5#
      • 1...Qxf5
        • 2.Qxf5#
      • 1...Qd4
        • 2.Bh5#
      • 1...Bd4
        • 2.Bh3#
      • 1...d4
        • 2.Qxe4#
      • 1...Ra7!
  • Keys
    • 1.Re7!
      • threat
        • 2.Se6#
      • 1...Qxe5+
        • 2.Bxe5#
      • 1...Qxf5
        • 2.Qxf5#
      • 1...Qd4
        • 2.Bh5#
      • 1...Bd4
        • 2.Bh3#
      • 1...d4
        • 2.Qxe4#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 9
  • Sets
    • Q(b);OGATE,XP(H)::QAR1(C),XQ(b)
    • Q(b);::R(F)+B(E)
    • Q(b);P_PINP(G)::R(F)+B(E)
    • Q(b);CHECK,OGATE,XP(G)::B(A),XQ(b)
    • B(a);::R(F)+B(E)
    • B(a);P_PINP(G)::R(F)+B(E)
    • P(e);N_GUARD::QAR1(C),XQ(b)
  • Tries
    • Try
      • S(J);CHECK,XP(e)
      • Vars
        • Q(b);XS(J)::R(F)+B(E)
        • R(d);XS(J)::QAR1(C),XQ(b)
      • Refutation
        • P(f);XS(J)
    • Try
      • R(I);
      • Threat
        • S(J)
      • Vars
        • Q(b);CHECK,OGATE,XP(G)::B(A),XQ(b)
        • Q(b);OGATE,XP(H)::QAR1(C),XQ(b)
        • Q(b);P_PINP(G)::R(F)+B(E)
        • B(a);P_PINP(G)::R(F)+B(E)
        • P(e);N_GUARD::QAR1(C),XQ(b)
      • Refutation
        • R(d);P_PINS(J)
  • Actual
    • R(I);
    • Threat
      • S(J)
    • Vars
      • Q(b);CHECK,OGATE,XP(G)::B(A),XQ(b)
      • Q(b);OGATE,XP(H)::QAR1(C),XQ(b)
      • Q(b);P_PINP(G)::R(F)+B(E)
      • B(a);P_PINP(G)::R(F)+B(E)
      • P(e);N_GUARD::QAR1(C),XQ(b)
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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).