MESON Chess Problem Database

Problem Display
PID: 261631 (3K2R1/8/7B/4pN2/2p1P2P/QN1b1k1B/2qr1p2/4br1n w - - 0 1)

Baumann, Hannes

Schweizerische Schachzeitung, 1977

3K2R1/8/7B/4pN2/2p1P2P/QN1b1k1B/2qr1p2/4br1n

#2

9 + 10

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ke2
      • 2.Bg4#
    • 1...Kxe4
      • 2.Qa8#
    • 1...Re2
      • 2.Bg2#
    • 1...Be2+
      • 2.Sxd2#
    • 1...Bxe4+
      • 2.Sbd4#
  • Tries
    • 1.Sbd4+?
      • 1...Kxe4
        • 2.Bg2#
        • 2.Qa8#
      • 1...exd4!
    • 1.Sg3?
      • threat
        • 2.Qf8#
      • 1...Be2+
        • 2.Sxd2#
        • 2.Sd4#
      • 1...Bxe4+
        • 2.Sxd2#
        • 2.Sd4#
      • 1...Sxg3!
    • 1.Sfd4+?
      • 1...Kxe4
        • 2.Bg2#
        • 2.Qa8#
      • 1...exd4!
    • 1.Bg4+?
      • 1...Kxe4
        • 2.Qa8#
      • 1...Kg2!
    • 1.Rg3+?
      • 1...Ke2
        • 2.Bg4#
      • 1...Kxe4
        • 2.Qa8#
      • 1...Sxg3!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Sg3#
      • 1...Be2+
        • 2.Sd6#
      • 1...Bxe4+
        • 2.Sfd4#
      • 1...Ke2
        • 2.Bg4#
      • 1...Kxe4
        • 2.Bg2#
      • 1...Sg3
        • 2.Sxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(h);N_GUARD,S_FLIGHT::B(C)
    • K(h);OGATEB,S_FLIGHT,XP(D)::QAB(A)
    • R(e);SBLOCK::B(C)
    • B(g);CHECK,SBLOCK::QAR(A)+S(B),DCHECK,XR(e)
    • B(g);CHECK,SBLOCK,XP(D)::QAR(A)+S(B),DCHECK
  • Tries
    • Try
      • S(B);CHECK,P_PINB(g)
      • Refutation
        • P(j);XS(B)
    • Try
      • S(F);
      • Threat
        • QAR(A)
      • Refutation
        • S(c);XS(F)
    • Try
      • S(F);CHECK
      • Refutation
        • P(j);XS(F)
    • Try
      • B(C);CHECK
      • Vars
        • K(h);N_GUARD,S_FLIGHT,XP(D)::QAB(A)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • R(I);CHECK
      • Vars
        • K(h);N_GUARD,S_FLIGHT::B(C)
        • K(h);N_GUARD,S_CUTS(c),S_FLIGHT,XP(D)::QAB(A)
      • Refutation
        • S(c);XR(I)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)+S(F)
    • Vars
      • B(g);CHECK,SBLOCK::QAR(A)+S(F)
      • B(g);CHECK,SBLOCK,XP(D)::QAR(A)+S(F),DCHECK
      • K(h);N_GUARD,S_FLIGHT::B(C)
      • K(h);N_GUARD,S_FLIGHT,XP(D)::B(C)
      • S(c);::QAR(A)+S(F),XS(c)
HTML5 logo

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).