MESON Chess Problem Database
Problem Display
PID: 161828 (b1r1N3/b1R2R1B/2qQ3K/P1n4n/PNk5/1pP5/3P4/8 w - - 0 1)
Biedermann, Werner
Welt im Bild, 1938
(First published on Sun Jan 9 1938)
#2
11 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qh1
- 2.Bd3#
- 2.Qd3#
- 2.Qd4#
- 2.Qa6#
- 1...Qg2
- 2.Bd3#
- 2.Qd3#
- 2.Qd4#
- 2.Qa6#
- 1...Qf3
- 2.Qd4#
- 2.Qa6#
- 1...Qxa4
- 2.Bd3#
- 2.Qd3#
- 1...Qe4
- 2.Qa6#
- 1...Qb5
- 2.Bd3#
- 2.Qd3#
- 2.Qd4#
- 1...Qd5
- 2.Qa6#
- 1...Qb7
- 2.Bd3#
- 2.Qd3#
- 2.Qd4#
- 1...Qd7
- 2.Bd3#
- 1...Qxe8
- 2.Bd3#
- 2.Qd3#
- 2.Qd4#
- 1...Qa6
- 2.Bd3#
- 2.Qxa6#
- 1...Qb6
- 2.Bd3#
- 1...Qxd6+
- 2.Sxd6#
- 1...Qxc7
- 2.Qd4#
- 1...Sd3
- 2.Bxd3#
- 1...Sxa4
- 2.Bd3#
- 1...Sa6
- 2.Bd3#
- 1...Se6
- 2.Bd3#
- 2.Qd5#
- 1...Sb7
- 2.Bd3#
- 1...Sd7
- 2.Bd3#
- 1...Sf6
- 2.Qd4#
- 1...Qh1
- Tries
- 1.Sxc6?
- threat
- 2.Se5#
- 2.Qd4#
- 1...Rxe8
- 2.Qd4#
- 1...Bxc6
- 2.Qd4#
- 1...Sxa4
- 2.Bd3#
- 1...Rd8
- 2.Se5#
- 1...Sd3
- 2.Se5#
- 2.Bxd3#
- 1...Se4
- 2.Se5#
- 1...Sa6
- 2.Se5#
- 2.Bd3#
- 1...Se6
- 2.Se5#
- 2.Bd3#
- 1...Sb7
- 2.Se5#
- 2.Bd3#
- 1...Sd7
- 2.Se5#
- 2.Bd3#
- 1...b2!
- threat
- 1.Rxc6?
- threat
- 2.Bd3#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 2.Qe6#
- 1...Rxe8
- 2.Bd3#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Bxc6
- 2.Qd4#
- 1...b2
- 2.Qd5#
- 2.Qe6#
- 1...Rd8
- 2.Bd3#
- 1...Sf4
- 2.Rxf4#
- 2.Qxf4#
- 2.Qd4#
- 1...Sf6
- 2.Bd3#
- 2.Qd3#
- 2.Qd4#
- 1...Sg7
- 2.Bd3#
- 2.Rf4#
- 2.Qf4#
- 2.Qd3#
- 2.Qd4#
- 2.Qd5#
- 1...Rxc6!
- threat
- 1.Rf4+?
- 1...Qe4
- 2.Qd3#
- 2.Qa6#
- 1...Se4
- 2.Bg8#
- 1...Sxf4!
- 1...Qe4
- 1.Qxc6?
- threat
- 2.Sd6#
- 2.Bd3#
- 2.Qb5#
- 2.Qa6#
- 1...Rxc7
- 2.Sd6#
- 2.Bd3#
- 2.Qb5#
- 1...Rxe8
- 2.Bd3#
- 2.Qb5#
- 2.Qa6#
- 1...Bxc6
- 2.Sd6#
- 1...Rd8
- 2.Qb5#
- 2.Qa6#
- 1...Rb8
- 2.Sd6#
- 2.Bd3#
- 1...Bb6
- 2.Sd6#
- 2.Bd3#
- 2.Qb5#
- 1...Bb7
- 2.Sd6#
- 2.Bd3#
- 2.Qb5#
- 1...Sf4
- 2.Sd6#
- 2.Rxf4#
- 2.Qb5#
- 2.Qa6#
- 1...b2!
- threat
- 1.Sxc6?
- Keys
- 1.Bg8!
- threat
- 2.Rf4#
- 1...Qxd6+
- 2.Sxd6#
- 1...Qxa4
- 2.Qd3#
- 1...Sxa4
- 2.Rf5#
- 1...Qe4
- 2.Qa6#
- 1...Qd5
- 2.Qa6#
- 1...Se6
- 2.Qd5#
- 1...Sf4
- 2.Rxf4#
- 1...Sf6
- 2.Qd4#
- threat
- 1.Bg8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 7
- Sets
- Q(e);N_PINQ(F),P_SPINS(c)::QAB(F)
- Q(e);N_PINQ(F),P_SPINS(c)::B(J)
- Q(e);P_SPINS(c)::B(J)
- Q(e);CHECK,P_SPINS(c),XQ(F)::S(K),XQ(e)
- Q(e);N_PINQ(F),XR(H)::QAR1(F)
- S(c);N_GUARD,P_SPINQ(e)::B(J),XS(c)
- S(c);N_GUARD,P_SPINQ(e),XP(C)::B(J)
- S(c);N_GUARD,P_SPINQ(e)::B(J)
- S(d);N_PINQ(F)::QAR1(F)
- Tries
- Try
- S(D);N_SPINQ(F),XQ(e)
- Threat
- DUALS(2)
- Vars
- R(h);XS(K)::QAR1(F)
- B(g);XS(D)::QAR1(F)
- S(c);N_GUARD,XP(C)::B(J)
- R(h);::S(D)
- S(c);::R(H)+S(D),DCHECK
- Refutation
- P(a);
- Try
- R(H);N_SPINQ(F),P_PINS(c),XQ(e)
- Threat
- DUALS(5)
- Vars
- B(g);N_SPINS(c),XR(H)::QAR1(F)
- R(h);::B(J)
- Refutation
- R(h);N_SPINS(c),P_PINQ(F),XR(H)
- Try
- R(I);CHECK
- Vars
- S(c);P_SPINQ(e),P_SPINS(c)::B(J)
- Refutation
- S(d);XR(I)
- Try
- Q(F);N_SPINQ(F),P_PINS(c),XQ(e)
- Threat
- DUALS(4)
- Vars
- B(g);N_SPINS(c),XQ(F)::S(K)
- Refutation
- P(a);
- Try
- Actual
- B(J);
- Threat
- B(J)+R(I),DCHECK
- Vars
- Q(e);CHECK,P_SPINS(c),XQ(F)::S(K),XQ(e)
- Q(e);N_PINQ(F),P_SPINS(c),XP(C)::QAB1(F)
- S(c);N_GUARD,P_SPINQ(e),XP(C)::B(J)+R(I)
- Q(e);N_PINQ(F),P_SPINS(c)::QAB(F)
- S(c);N_PINQ(F),P_SPINQ(e)::QAB1(F)
- S(d);::B(J)+R(I),DCHECK,XS(d)
- S(d);N_PINQ(F)::QAR1(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).