MESON Chess Problem Database
Problem Display
PID: 22294 (6Bb/2pn4/R1P5/1N6/Pk2rQ2/1N3b2/3P3r/1K2B3 w - - 0 1)
Schmidt, Leif Carl
Die Schwalbe, 1976
#2
10 + 7
| 15422 | Problemskak | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rc4
- 2.Qxc4#
- 1...Be2
- 2.d4#
- 1...Bc3
- 2.dxc3#
- 1...Se5
- 2.Qf8#
- 1...Rc4
- Tries
- 1.Qd6+?
- 1...Sc5
- 2.Qxc5#
- 1...cxd6!
- 1...Sc5
- 1.Qxe4+?
- 1...Bd4
- 2.Qxd4#
- 1...Bxe4+!
- 1...Bd4
- 1.d3+?
- 1...Bc3
- 2.Bxc3#
- 1...Rd2!
- 1...Bc3
- 1.d4+?
- 1...Rd2
- 2.Bxd2#
- 2.Qxd2#
- 1...Rxe1+!
- 1...Rd2
- 1.Qd6+?
- Keys
- 1.Sc1!
- threat
- 2.Sd3#
- 1...Kc5
- 2.Sd3#
- 1...Rc4
- 2.Qxc4#
- 1...Be2
- 2.d4#
- 1...Sc5
- 2.Sa2#
- 1...Se5
- 2.Qf8#
- threat
- 1.Sc1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(d);OGATE::QAR1(F),XR(d)
- B(b);S_CUTR(a)::B(B)+P(C)
- B(g);OGATE::P(C),XB(g)
- S(f);N_GUARD::QAB(F)
- Tries
- Try
- Q(F);CHECK,N_PINR(d)
- Vars
- S(f);N_GUARD,P_SPINS(f)::QAB1(F),XS(f)
- Refutation
- P(e);XQ(F)
- Try
- Q(F);CHECK,XR(d)
- Vars
- B(g);N_GUARD,P_SPINB(g)::QAR2(F),XB(g)
- Refutation
- B(b);CHECK,XQ(F)
- Try
- P(C);CHECK
- Vars
- B(g);N_GUARD,P_SPINB(g)::B(B),XB(g)
- Refutation
- R(a);N_SPINR(d),P_SPINR(a)
- Try
- P(C);CHECK,N_PINR(d)
- Refutation
- R(d);CHECK,XB(B)
- Try
- Actual
- S(D);
- Threat
- S(D)
- Vars
- K(c);N_SPINR(d),S_FLIGHT::S(D)
- R(d);OGATE::QAR1(F),XR(d)
- B(b);S_CUTR(a)::B(B)+P(C)
- S(f);SBLOCK::S(D)
- S(f);N_GUARD::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).