MESON Chess Problem Database
Problem Display
PID: 184914 (K3R3/2Q3Bp/8/n3Np2/1pP1k2P/2r5/4NP2/3B1n1b w - - 0 1)
Feigin, Eliahu
Bulletin Ouvrier des Echecs, 1949
#2
10 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rc2
- 2.Bxc2#
- 1...Sb3
- 2.Qc6#
- 2.Qb7#
- 1...Sxc4
- 2.Qc6#
- 2.Qb7#
- 1...Sc6
- 2.Qxc6#
- 1...Sb7
- 2.Qc6#
- 2.Qxb7#
- 1...Rc2
- Tries
- 1.Sd3+?
- 1...Kf3
- 2.Sef4#
- 1...Kxd3+!
- 1...Kf3
- 1.Sf3+?
- 1...Kd3
- 2.Sf4#
- 1...Kxf3!
- 1...Kd3
- 1.Sg4+?
- 1...Kf3
- 2.Sf4#
- 1...Kd3+!
- 1...Kf3
- 1.Bc2+?
- 1...Rd3
- 2.Bxd3#
- 1...Rxc2!
- 1...Rd3
- 1.Qd6?
- threat
- 2.Qd4#
- 2.Qd5#
- 1...Rxc4
- 2.Qd3#
- 1...Sxc4
- 2.Qd4#
- 2.Qc6#
- 1...Rd3
- 2.Qxd3#
- 1...Se3
- 2.Qd4#
- 1...Sb3
- 2.Qd5#
- 2.Qc6#
- 1...Sc6
- 2.Qd5#
- 2.Qxc6#
- 1...f4!
- threat
- 1.Qd8?
- threat
- 2.Qd4#
- 2.Qd5#
- 1...Rxc4
- 2.Qd3#
- 1...Sxc4
- 2.Qd4#
- 1...Rd3
- 2.Qxd3#
- 1...Se3
- 2.Qd4#
- 1...Sb3
- 2.Qd5#
- 1...Sc6
- 2.Qd5#
- 1...f4!
- threat
- 1.Qb7+?
- 1...Sc6
- 2.Qxc6#
- 1...Sxb7!
- 1...Sc6
- 1.Qd7?
- threat
- 2.Qd4#
- 2.Qd5#
- 1...Rxc4
- 2.Qd3#
- 1...Sxc4
- 2.Qc6#
- 2.Qd4#
- 2.Qb7#
- 1...Rd3
- 2.Qxd3#
- 1...Se3
- 2.Qd4#
- 1...Sb3
- 2.Qc6#
- 2.Qd5#
- 2.Qb7#
- 1...Sc6
- 2.Qxc6#
- 2.Qd5#
- 1...f4!
- threat
- 1.Sd3+?
- Keys
- 1.Sf4!
- threat
- 2.Sed3#
- 2.Sf3#
- 2.Sg4#
- 2.Sc6#
- 2.Seg6#
- 2.Sd7#
- 2.Sf7#
- 1...Kd4+
- 2.Sf3#
- 1...Kxf4+
- 2.Sc6#
- 1...Sxc4
- 2.Sxc4#
- 1...Rd3
- 2.Sexd3#
- 2.Sf3#
- 2.Sg4#
- 2.Sc6#
- 2.Seg6#
- 2.Sd7#
- 2.Sf7#
- 1...Rf3
- 2.Sed3#
- 2.Sxf3#
- 2.Sg4#
- 2.Sc6#
- 2.Seg6#
- 2.Sd7#
- 2.Sf7#
- 1...Bf3
- 2.Sed3#
- 2.Sxf3#
- 2.Sg4#
- 2.Sc6#
- 2.Seg6#
- 2.Sd7#
- 2.Sf7#
- 1...Sc6
- 2.Sxc6#
- threat
- 1.Sf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- R(c);N_GUARD::B(A),XR(c)
- S(f);N_GUARD::QAB(G),XS(f)
- Tries
- Try
- S(F);CHECK
- Vars
- K(e);S_FLIGHT::B(A)+S(B)
- Refutation
- K(e);CHECK,S_FLIGHT,XS(F)
- Try
- S(F);CHECK
- Vars
- K(e);P_PINS(F),S_FLIGHT::S(B)
- Refutation
- K(e);S_FLIGHT,XS(F)
- Try
- S(F);CHECK
- Vars
- K(e);S_FLIGHT::B(A)+S(B)
- Refutation
- K(e);CHECK,S_FLIGHT
- Try
- B(A);CHECK
- Vars
- R(c);N_GUARD,P_SPINR(c)::B(A),XR(c)
- Refutation
- R(c);XB(A)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(c);N_GUARD,XP(D)::QAB1(G)
- R(c);N_GUARD::QAB1(G),XR(c)
- S(a);::QAR1(G)
- Refutation
- P(g);
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(c);N_GUARD,XP(D)::QAB1(G)
- S(f);XP(D)::QAR1(G)
- R(c);N_GUARD::QAB1(G),XR(c)
- S(a);::QAR1(G)
- S(f);::QAB1(G)
- Refutation
- P(g);
- Try
- Q(G);CHECK
- Vars
- S(f);N_GUARD,P_SPINS(f)::QAB(G),XS(f)
- Refutation
- S(f);XQ(G)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(c);N_GUARD,XP(D)::QAB1(G)
- R(c);N_GUARD::QAB1(G),XR(c)
- S(a);::QAR1(G)
- Refutation
- P(g);
- Try
- Actual
- S(B);
- Threat
- DUALS(7)
- Vars
- K(e);CHECK,P-FLIGHT::B(H)+S(F),DCHECK
- K(e);CHECK,P-FLIGHT,XS(B)::QAB(G)+S(F)
- S(f);XP(D)::R(J)+S(F),XS(f)
- S(f);::R(J)+S(F),XS(f)
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).