MESON Chess Problem Database
Problem Display
PID: 266388 (7B/2Kp4/1p6/3k2N1/3Pr3/2Qp1r2/b5N1/7B w - - 0 1)
Ahues, Herbert Siegfried Oskar
Schweizerische Schachzeitung, 2019
#2
7 + 7
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.Se3#
- 1...Rf2
- 2.Se3#
- 1...Rfe3
- 2.Sxe3#
- 2.Sf4#
- 1...Rg3
- 2.Sf4#
- 1...Rh3
- 2.Sf4#
- 1...Rff4
- 2.Se3#
- 2.Sxf4#
- 1...Rf5
- 2.Se3#
- 1...Rf6
- 2.Se3#
- 1...Rf7
- 2.Se3#
- 1...Rf8
- 2.Se3#
- 1...Re1
- 2.Sf4#
- 1...Re2
- 2.Sf4#
- 1...Ree3
- 2.Sxe3#
- 2.Sf4#
- 1...Rxd4
- 2.Se3#
- 2.Qxd4#
- 1...Ref4
- 2.Se3#
- 2.Sxf4#
- 1...Rg4
- 2.Se3#
- 1...Rh4
- 2.Se3#
- 1...Re5
- 2.Sf4#
- 1...Re6
- 2.Sf4#
- 1...Re7
- 2.Sf4#
- 1...Re8
- 2.Sf4#
- 1...Bb1
- 2.Qb3#
- 1...Bb3
- 2.Qxb3#
- 1...b5
- 2.Qc5#
- 1...d6
- 2.Qc6#
- 1...Rf1
- Tries
- 1.Qxd3?
- threat
- 2.Qb5#
- 1...Bc4
- 2.Qxe4#
- 1...Rf6
- 2.Se3#
- 1...Re5
- 2.Sf4#
- 1...b5
- 2.Qxb5#
- 1...Rxd3!
- threat
- 1.Qxd3?
- Keys
- 1.Qb4!
- threat
- 2.Qb5#
- 1...Bc4
- 2.Qd6#
- 1...Rf6
- 2.Se3#
- 1...Re5
- 2.Sf4#
- 1...b5
- 2.Qc5#
- 2.Qxb5#
- threat
- 1.Qb4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 18
- Sets
- R(c);N_GUARD,S_CUTR(d)::S(B)
- R(d);N_GUARD,S_CUTR(c)::S(B)
- B(a);N_GUARD::QAB(C)
- B(a);N_GUARD::QAB(C),XB(a)
- P(f);N_GUARD::QAR1(C)
- P(g);N_GUARD::QAB1(C)
- Tries
- Try
- Q(C);XP(b)
- Threat
- QAR2(C)
- Vars
- B(a);SBLOCK::QAB1(C),XR(d)
- R(c);N_GUARD,S_CUTR(d)::S(B)
- R(d);N_GUARD,S_CUTR(c)::S(B)
- P(f);::QAR2(C),XP(f)
- Refutation
- R(c);XQ(C)
- Try
- Actual
- Q(C);
- Threat
- QAR2(C)
- Vars
- B(a);SBLOCK::QAR1(C)
- R(c);N_GUARD,S_CUTR(d)::S(B)
- R(d);N_GUARD,S_CUTR(c)::S(B)
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).