MESON Chess Problem Database
Problem Display
PID: 265632 (8/1p5K/1R3P2/R1n1pk2/4bnpB/4Q1p1/B2N3p/8 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Schweizerische Schachzeitung, 2016
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Se2
- 2.Qg5#
- 1...Sg2
- 2.Qg5#
- 1...Sfd3
- 2.Qg5#
- 1...Sd5
- 2.Qg5#
- 1...Sh5
- 2.Qg5#
- 1...Sg6
- 2.Qg5#
- 1...Sb3
- 2.Qxe4#
- 1...Scd3
- 2.Qxe4#
- 1...Sa4
- 2.Qxe4#
- 1...Sa6
- 2.Qxe4#
- 1...Se6
- 2.Qxe4#
- 1...Sd7
- 2.Qxe4#
- 1...Se2
- Tries
- 1.Sf1?
- threat
- 2.Sxg3#
- 1...Se2
- 2.Qg5#
- 1...Sh5
- 2.Qg5#
- 1...g2
- 2.Sg3#
- 1...h1S!
- threat
- 1.Sxe4?
- threat
- 2.Sxg3#
- 2.Sd6#
- 1...h1S
- 2.Sd6#
- 1...Se2
- 2.Sd6#
- 1...Sd5
- 2.Sxg3#
- 1...Sh5
- 2.Sd6#
- 1...Sb3
- 2.Sxg3#
- 1...g2
- 2.Sg3#
- 2.Sd6#
- 1...Sxe4!
- threat
- 1.Be6+?
- 1...Scxe6
- 2.Qxe4#
- 1...Sfxe6!
- 1...Scxe6
- 1.f7?
- threat
- 2.Rf6#
- 2.f8Q#
- 2.f8R#
- 1...h1Q
- 2.Rf6#
- 2.f8Q#
- 2.f8R#
- 1...h1S
- 2.Rf6#
- 2.f8Q#
- 2.f8R#
- 1...h1B
- 2.Rf6#
- 2.f8Q#
- 2.f8R#
- 1...h1R
- 2.Rf6#
- 2.f8Q#
- 2.f8R#
- 1...Bb1
- 2.Rf6#
- 2.f8Q#
- 2.f8R#
- 1...Bh1
- 2.Rf6#
- 2.f8Q#
- 2.f8R#
- 1...Bc2
- 2.Rf6#
- 2.f8Q#
- 2.f8R#
- 1...Bg2
- 2.Rf6#
- 2.f8Q#
- 2.f8R#
- 1...Bd3
- 2.Rf6#
- 2.f8Q#
- 2.f8R#
- 1...Bf3
- 2.Rf6#
- 2.f8Q#
- 2.f8R#
- 1...Bd5
- 2.Rf6#
- 1...Bc6
- 2.f8Q#
- 2.f8R#
- 1...Se2
- 2.Rf6#
- 2.Qg5#
- 2.f8Q#
- 2.f8R#
- 1...Sg2
- 2.Rf6#
- 2.Qg5#
- 2.f8Q#
- 2.f8R#
- 1...Sfd3
- 2.Rf6#
- 2.Qg5#
- 2.f8Q#
- 2.f8R#
- 1...Sh3
- 2.Rf6#
- 2.f8Q#
- 2.f8R#
- 1...Sd5
- 2.Qg5#
- 1...Sh5
- 2.Qg5#
- 1...Sg6
- 2.Rf6#
- 2.Qg5#
- 1...Sb3
- 2.Rf6#
- 2.Qxe4#
- 2.f8Q#
- 2.f8R#
- 1...Scd3
- 2.Rf6#
- 2.Qxe4#
- 2.f8Q#
- 2.f8R#
- 1...Sa4
- 2.Rf6#
- 2.Qxe4#
- 2.f8Q#
- 2.f8R#
- 1...Sa6
- 2.Rf6#
- 2.Qxe4#
- 2.f8Q#
- 2.f8R#
- 1...Sce6
- 2.Qxe4#
- 1...Sd7
- 2.Qxe4#
- 1...g2
- 2.Rf6#
- 2.f8Q#
- 2.f8R#
- 1...Sfe6!
- threat
- 1.Sf1?
- Keys
- 1.Sc4!
- threat
- 2.Sd6#
- 1...Bd5
- 2.Qxe5#
- 1...Sd5
- 2.Qg5#
- 1...Sb3
- 2.Rxe5#
- threat
- 1.Sc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 10
- Sets
- S(d);OGATE::QAR1(C)
- S(f);N_GUARD,P_SPINP(g)::QAB1(C),XB(c)
- Tries
- Try
- S(B);
- Threat
- S(B),XP(b)
- Vars
- S(d);OGATE::QAR1(C)
- P(b);::S(B)
- Refutation
- P(a);
- Try
- S(B);XB(c)
- Threat
- DUALS(2)
- Vars
- P(a);::S(B)
- S(d);::S(B)
- S(d);::S(B),XP(b)
- S(f);P_SPINP(g)::S(B),XP(b)
- Refutation
- S(f);P_SPINP(g),XS(B)
- Try
- B(A);CHECK
- Vars
- S(f);P_SPINP(g),XB(A)::QAB1(C),XB(c)
- Refutation
- S(d);XB(A)
- Try
- P(G);
- Threat
- DUALS(3)
- Vars
- B(c);::R1(F)
- B(c);::P=Q
- S(d);OGATE::QAR1(C)
- S(f);N_GUARD,P_SPINP(g)::QAB1(C),XB(c)
- Refutation
- S(d);
- Try
- Actual
- S(B);
- Threat
- S(B)
- Vars
- B(c);OGATE::QAR1(C),XP(g)
- S(d);OGATE::QAR1(C)
- S(f);OGATE,P_SPINP(g)::R1(E),XP(g)
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).