MESON Chess Problem Database
Problem Display
PID: 82369 (6Rb/r4p1B/2N1pk1P/R2n4/1Qp2p2/8/rq3N1K/B7 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Schweizerische Schachzeitung, 1996
#2
9 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qe5
- 2.Bxe5#
- 1...Sc7
- 2.Qe7#
- 1...e5
- 2.Qd6#
- 1...Qe5
- Tries
- 1.Bxb2+?
- 1...Sc3
- 2.Se4#
- 2.Sg4#
- 1...c3
- 2.Se4#
- 2.Sg4#
- 1...e5
- 2.Qd6#
- 1...Rxb2!
- 1...Sc3
- 1.Bc2?
- threat
- 2.Sg4#
- 1...e5
- 2.Qd6#
- 1...Se3
- 2.Se4#
- 1...Bg7!
- threat
- 1.Qd2?
- threat
- 2.Se4#
- 2.Sg4#
- 1...Bg7
- 2.Se4#
- 1...Sc3
- 2.Sg4#
- 2.Qxf4#
- 1...Se3
- 2.Se4#
- 1...e5!
- threat
- 1.Qxb2+?
- 1...Sc3
- 2.Se4#
- 2.Sg4#
- 1...c3
- 2.Se4#
- 2.Sg4#
- 1...e5
- 2.Qxe5#
- 1...Rxb2!
- 1...Sc3
- 1.Bxb2+?
- Keys
- 1.Rg2!
- threat
- 2.Se4#
- 1...e5
- 2.Qd6#
- 1...Sc3
- 2.Sg4#
- threat
- 1.Rg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- Q(b);OGATE::B(A),XQ(b)
- S(e);N_GUARD,S_CUTR(h)::QAB1(D)
- P(f);N_SPINQ(b),OGATEB::QAR2(D)
- Tries
- Try
- B(A);CHECK,N_SPINS(B),XQ(b)
- Vars
- P(f);P_SPINP(f),S_CUTP(c),S_CUTR(a),S_CUTS(e)::QAR2(D)
- Refutation
- R(a);P_PINS(B),XB(A)
- Try
- B(H);N_SPINS(B)
- Threat
- S(B)
- Vars
- P(f);N_SPINQ(b),OGATEB::QAR2(D)
- S(e);::S(B)
- Refutation
- B(j);
- Try
- Q(D);N_SPINS(B)
- Threat
- DUALS(2)
- Vars
- B(j);::S(B)
- S(e);::S(B)
- Refutation
- P(f);N_SPINQ(b)
- Try
- Q(D);CHECK,N_SPINS(B),XQ(b)
- Vars
- P(f);P_SPINP(f)::QAB1(D),XP(f)
- Refutation
- R(a);P_PINS(B),P_SPINR(a),XQ(D)
- Try
- Actual
- R(I);N_SPINS(B)
- Threat
- S(B)
- Vars
- P(f);N_SPINQ(b),OGATEB::QAR2(D)
- S(e);N_SPINQ(b)::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).