MESON Chess Problem Database
Problem Display
PID: 137732 (5b2/8/Q7/8/P6r/1kN5/1PN5/KB6 w - - 0 1)
Forster, Klaus
Comm., Die Schwalbe, 2010
#2
7 + 3
| 23 | Die Schwalbe | 2012 |
SOLUTION
- SOUND
- Sets
- 1...Rh1
- 2.Qe6#
- 1...Rh2
- 2.Qe6#
- 1...Rh3
- 2.Qe6#
- 1...Rxa4+
- 2.Qxa4#
- 1...Rh7
- 2.Qe6#
- 1...Rh8
- 2.Qe6#
- 1...Rh1
- Tries
- 1.Sd4+?
- 1...Kb4
- 2.Qb5#
- 1...Rxd4!
- 1...Kb4
- 1.Sa2?
- threat
- 2.Sc1#
- 1...Rxa4
- 2.Qd3#
- 1...Rh1
- 2.Sd4#
- 1...Bh6!
- threat
- 1.Qe2?
- threat
- 2.Ba2#
- 1...Rh1
- 2.Qe6#
- 1...Rxa4+!
- threat
- 1.Qb5+?
- 1...Rb4
- 2.Sd4#
- 1...Bb4!
- 1...Rb4
- 1.Sd4+?
- Keys
- 1.Qd3!
- threat
- 2.Ba2#
- 1...Rxa4+
- 2.Sa2#
- 1...Rh1
- 2.Qd5#
- threat
- 1.Qd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- R(b);N_GUARD,P_PINB(B)::QAB(G)
- R(b);N_GUARD::QAB(G)
- R(b);CHECK,OGATE,XP(F)::QAB1(G),XR(b)
- Tries
- Try
- S(D);CHECK
- Vars
- K(a);P-FLIGHT::QAR1(G)
- Refutation
- R(b);XS(D)
- Try
- S(E);
- Threat
- S(E)
- Vars
- R(b);P_PINS(E),SBLOCK,XP(F)::QAR2(G)
- R(b);N_GUARD,P_PINB(B)::S(D)
- Refutation
- B(c);
- Try
- Q(G);
- Threat
- B(B)
- Vars
- R(b);N_GUARD,P_PINB(B)::QAB(G)
- Refutation
- R(b);CHECK,XP(F)
- Try
- Q(G);CHECK
- Vars
- R(b);P_SPINR(b)::S(D)
- Refutation
- B(c);P_SPINB(c)
- Try
- Actual
- Q(G);
- Threat
- B(B)
- Vars
- R(b);CHECK,SBLOCK,XP(F)::QAR(G)+S(E)
- R(b);N_GUARD,P_PINB(B)::QAB(G)
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).