MESON Chess Problem Database
Problem Display
PID: 255661 (B7/8/1K1B4/N2P3r/1p1k4/1r1P4/3Q1N2/n7 w - - 0 1)
Rozenfeld, Isai Hillel
Deutsche Schachzeitung, 1968
#2
8 + 5
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rc3
- 2.Qf4#
- 1...Rxd3
- 2.Qxd3#
- 1...Rxd5
- 2.Sc6#
- 1...Re5
- 2.Bc5#
- 1...Sc2
- 2.Sxb3#
- 1...Rc3
- Tries
- 1.Sd1?
- threat
- 2.Qe3#
- 1...Rxd3
- 2.Qxb4#
- 2.Qf4#
- 1...Re5
- 2.Bc5#
- 1...Sc2
- 2.Sxb3#
- 1...Rh3!
- threat
- 1.Sg4?
- threat
- 2.Bc5#
- 1...Rxd3
- 2.Qxb4#
- 1...Rxd5
- 2.Sc6#
- 1...Rc3
- 2.Qe3#
- 1...Rh6!
- threat
- 1.Qc1?
- threat
- 2.Qc5#
- 1...Rxd5
- 2.Sc6#
- 1...Rc3
- 2.Qf4#
- 1...Sc2!
- threat
- 1.Sd1?
- Keys
- 1.Qe1!
- threat
- 2.Bc5#
- 1...Rxd5
- 2.Sc6#
- 1...Rc3
- 2.Qe4#
- 1...Rh6
- 2.Qe5#
- threat
- 1.Qe1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 3
- Sets
- R(b);SBLOCK::QAR2(A)
- R(b);OGATE,P_SPINR(b),XP(C)::QAR1(A),XR(b)
- R(e);SBLOCK,XP(E)::S(D)
- R(e);SBLOCK::B(G)
- S(a);N_GUARD::S(D),XR(b)
- Tries
- Try
- S(B);
- Threat
- QAB1(A)
- Vars
- R(e);SBLOCK::B(G)
- S(a);N_GUARD::S(D),XR(b)
- Refutation
- R(e);
- Try
- S(B);
- Threat
- B(G)
- Vars
- R(b);N_GUARD,P_SPINR(b),SBLOCK,XP(C)::QAR2(A),XP(c)
- R(e);SBLOCK,XP(E)::S(D)
- R(b);SBLOCK::QAB1(A)
- Refutation
- R(e);P_PINB(G)
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- R(e);SBLOCK,XP(E)::S(D)
- R(b);SBLOCK::QAR2(A)
- Refutation
- S(a);
- Try
- Actual
- Q(A);
- Threat
- B(G)
- Vars
- R(e);SBLOCK,XP(E)::S(D)
- R(b);SBLOCK::QAR1(A)
- R(e);N_GUARD,P_PINB(G)::QAB1(A)
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).