MESON Chess Problem Database
Problem Display
PID: 259201 (8/1qN1p3/R1b1B3/2p1k1K1/Rr3p2/3Q4/8/2B1N3 w - - 0 1)
Dittrich, Stefan
3rd Prize, Skakbladet, 1984
#2
8 + 7
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Bxf4#
- 1...Rb2
- 2.Bxf4#
- 1...Rb3
- 2.Bxf4#
- 1...Re4
- 2.Sf3#
- 1...Rb5
- 2.Bxf4#
- 1...Rb6
- 2.Bxf4#
- 1...Be4
- 2.Bxf4#
- 1...c4
- 2.Bxf4#
- 1...Rb1
- Tries
- 1.Bc4?
- threat
- 2.Bxf4#
- 1...f3
- 2.Bf4#
- 1...Rxc4!
- threat
- 1.Rxc6?
- threat
- 2.Sf3#
- 2.Qd5#
- 1...Rd4
- 2.Sf3#
- 2.Qf5#
- 1...f3
- 2.Sxf3#
- 2.Qd5#
- 1...Qxc6!
- threat
- 1.Qc4?
- threat
- 2.Bxf4#
- 1...Kd6
- 2.Bxf4#
- 1...f3
- 2.Bf4#
- 1...Rxc4!
- threat
- 1.Qf5+?
- 1...Kd6
- 2.Se8#
- 1...Kd4!
- 1...Kd6
- 1.Bc4?
- Keys
- 1.Qe2+!
- 1...Kd4
- 2.Bb2#
- 1...Kd6
- 2.Se8#
- 1...Re4
- 2.Bxf4#
- 1...Be4
- 2.Sf3#
- 1...Kd4
- 1.Qe2+!
FEATURES
- Static
- TYPE = CHECKING_KEY
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- R(a);N_GUARD::B(A),XP(b)
- R(a);S_CUTB(e)::S(B)
- B(e);S_CUTR(a)::B(A),XP(b)
- P(c);S_CUTR(a)::B(A),XP(b)
- Tries
- Try
- B(G);
- Threat
- B(A),XP(b)
- Vars
- P(b);::B(A)
- Refutation
- R(a);XB(G)
- Try
- R(F);XB(e)
- Threat
- DUALS(2)
- Refutation
- Q(f);XR(F)
- Try
- Q(C);
- Threat
- B(A),XP(b)
- Vars
- K(d);P_SPINB(e),S_FLIGHT::B(A),XP(b)
- P(b);::B(A)
- Refutation
- R(a);XQ(C)
- Try
- Q(C);CHECK
- Vars
- K(d);N_GUARD,P_SPINB(e),S_FLIGHT::S(H)
- Refutation
- K(d);P_SPINR(a),S_FLIGHT
- Try
- Actual
- Q(C);CHECK
- Vars
- K(d);N_GUARD,P_SPINR(a),S_FLIGHT::B(A)
- K(d);N_GUARD,P_SPINB(e),S_CUTR(a),S_FLIGHT::S(H)
- R(a);P_SPINR(a)::B(A),XP(b)
- B(e);P_SPINB(e)::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).