MESON Chess Problem Database
Problem Display
PID: 247401 (8/4p3/3pQ3/8/p2k4/P1pN1p2/p1p2P2/rbK2B2 w - - 0 1)
Speckmann, Werner
Stella Polaris, 1968
#2
6 + 10
SOLUTION
- SOUND
- Sets
- 1...d5
- 2.Qg4#
- 1...d5
- Tries
- 1.Se1?
- 1...d5
- 2.Qe3#
- 1...Kc5!
- 1...d5
- 1.Sf4?
- threat
- 2.Qd5#
- 2.Qe3#
- 1...d5
- 2.Qxd5#
- 2.Qe3#
- 1...Kc5!
- threat
- 1.Be2?
- 1...d5
- 2.Qg4#
- 1...fxe2!
- 1...d5
- 1.Qe3+?
- 1...Kd5
- 2.Sb4#
- 1...Kc4!
- 1...Kd5
- 1.Qe5+?
- 1...Kc4
- 2.Sc5#
- 1...dxe5!
- 1...Kc4
- 1.Qxd6+?
- 1...Kc4
- 2.Sc5#
- 1...Ke4
- 2.Qe5#
- 1...exd6!
- 1...Kc4
- 1.Se1?
- Keys
- 1.Sb4!
- threat
- 2.Qd5#
- 2.Qe3#
- 1...Kc5
- 2.Qe3#
- 1...d5
- 2.Qxd5#
- 2.Qe3#
- threat
- 1.Sb4!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- P(i);SBLOCK::QAR(F)
- Tries
- Try
- S(E);
- Vars
- P(i);SBLOCK::QAB1(F)
- Refutation
- K(h);S_FLIGHT
- Try
- S(E);
- Threat
- DUALS(2)
- Refutation
- K(h);S_FLIGHT
- Try
- B(B);
- Vars
- P(i);SBLOCK::QAR(F)
- Refutation
- P(f);XB(B)
- Try
- Q(F);CHECK
- Vars
- K(h);P-FLIGHT::S(E)
- Refutation
- K(h);P-FLIGHT
- Try
- Q(F);CHECK
- Vars
- K(h);P-FLIGHT::B(B)+S(E)
- Refutation
- P(i);XQ(F)
- Try
- Q(F);CHECK,XP(i)
- Vars
- K(h);P-FLIGHT::B(B)+S(E)
- K(h);P-FLIGHT::QAR1(F)
- Refutation
- P(j);XQ(F)
- Try
- Actual
- S(E);
- Threat
- DUALS(2)
- Vars
- K(h);S_FLIGHT::QAB(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).