MESON Chess Problem Database
Problem Display
PID: 186104 (2B1b1K1/3r1p2/2Rb1N2/1P2k1B1/3N4/4P1p1/6r1/Q7 w - - 0 1)
Speiser, Jacob Kopel
Basler Nachrichten, 1922
#2
9 + 7
| 15601 | Albrecht-Leiss-Degener Collection | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Ra7
- 2.Sf3#
- 1...Rb7
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 1...Rc7
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 1...Re7
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 1...Rd8
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 1...Ba3
- 2.Bf4#
- 1...Bb4
- 2.Bf4#
- 1...Bc5
- 2.Bf4#
- 1...Bc7
- 2.Bf4#
- 1...Be7
- 2.Bf4#
- 1...Bb8
- 2.Bf4#
- 1...Bf8
- 2.Bf4#
- 1...Ra7
- Tries
- 1.Sf3+?
- 1...Ke6
- 2.Qe5#
- 1...Kf5!
- 1...Ke6
- 1.Bxd7?
- threat
- 2.Sc2#
- 2.Se2#
- 2.Sf3#
- 1...Rg1
- 2.Sf3#
- 1...Ra2
- 2.Sf3#
- 1...Rb2
- 2.Sf3#
- 1...Rc2
- 2.Sxc2#
- 2.Sf3#
- 1...Rd2
- 2.Sf3#
- 1...Re2
- 2.Sc2#
- 2.Sxe2#
- 2.Sf3#
- 1...Ba3
- 2.Sf3#
- 2.Bf4#
- 1...Bb4
- 2.Sf3#
- 2.Bf4#
- 1...Bc5
- 2.Sf3#
- 2.Bf4#
- 1...Bxd7!
- threat
- 1.Qb1?
- threat
- 2.Qe4#
- 2.Qf5#
- 1...Rf2
- 2.Qe4#
- 1...Rc2!
- threat
- 1.Qa2?
- threat
- 2.Qd5#
- 1...Ba3
- 2.Bf4#
- 1...Bb4
- 2.Bf4#
- 1...Bc5
- 2.Bf4#
- 1...Bc7
- 2.Bf4#
- 1...Be7
- 2.Bf4#
- 1...Bb8
- 2.Bf4#
- 1...Bf8
- 2.Bf4#
- 1...Rxa2!
- threat
- 1.Sf3+?
- Keys
- 1.Qh1!
- 1...Rg1
- 2.Sg4#
- 2.Qe4#
- 2.Qd5#
- 1...Ra2
- 2.Sg4#
- 2.Qe4#
- 2.Qd5#
- 1...Rb2
- 2.Sg4#
- 2.Qe4#
- 2.Qd5#
- 1...Rc2
- 2.Sg4#
- 2.Qe4#
- 2.Qd5#
- 1...Rd2
- 2.Sg4#
- 2.Qe4#
- 2.Qd5#
- 1...Re2
- 2.Sg4#
- 2.Qe4#
- 2.Qd5#
- 1...Rf2
- 2.Sg4#
- 2.Qe4#
- 2.Qd5#
- 1...Rh2
- 2.Sg4#
- 2.Qe4#
- 2.Qd5#
- 1...Ra7
- 2.Sf3#
- 1...Rb7
- 2.Sf3#
- 1...Rc7
- 2.Sf3#
- 1...Re7
- 2.Sf3#
- 1...Rd8
- 2.Sf3#
- 1...Ba3
- 2.Bf4#
- 1...Bb4
- 2.Bf4#
- 1...Bc5
- 2.Bf4#
- 1...Bc7
- 2.Bf4#
- 1...Be7
- 2.Bf4#
- 1...Bb8
- 2.Bf4#
- 1...Bf8
- 2.Bf4#
- 1...Rg1
- 1.Qh1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- R(e);::QAB(A)+S(C),DCHECK
- B(d);::B(E)
- Tries
- Try
- S(C);CHECK
- Vars
- K(c);P-FLIGHT,P_SPINB(d),P_SPINR(e)::QAR1(A)
- Refutation
- K(c);P-FLIGHT,P_SPINR(e)
- Try
- B(H);XR(e)
- Threat
- DUALS(3)
- Vars
- R(a);::QAB(A)+S(C),DCHECK
- R(a);::S(C)
- Refutation
- B(g);XB(H)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(a);::QAR1(A)
- Refutation
- R(a);
- Try
- Q(A);
- Threat
- QAR1(A)
- Vars
- B(d);::B(E)
- Refutation
- R(a);XQ(A)
- Try
- Actual
- Q(A);
- Vars
- R(e);::S(C)
- B(d);::B(E)
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).