MESON Chess Problem Database
Problem Display
PID: 132617 (8/4K3/1P4p1/2p2kB1/2PPp3/P2ppP2/1Q4R1/3nRN2 w - - 0 1)
Koltanowski, George
Source?, 0000
#2
11 + 7
| 2425 | San Francisco Chronicle | 0000 |
SOLUTION
- SOUND
- Sets
- 1...Sxb2
- 2.Sxe3#
- 1...Sf2
- 2.Sxe3#
- 1...Sc3
- 2.Sxe3#
- 1...cxd4
- 2.Qb5#
- 1...Sxb2
- Tries
- 1.Rxd1?
- threat
- 2.Sxe3#
- 1...cxd4
- 2.Qb5#
- 1...e2
- 2.Se3#
- 1...exf3!
- threat
- 1.Rg4?
- threat
- 2.Sg3#
- 1...cxd4
- 2.Qb5#
- 1...exf3!
- threat
- 1.Qb1?
- 1...exf3
- 2.Qxd3#
- 1...cxd4
- 2.Qb5#
- 1...d2
- 2.Qxe4#
- 2.fxe4#
- 1...Sb2
- 2.Sxe3#
- 1...Sf2
- 2.Sxe3#
- 1...Sc3
- 2.Sxe3#
- 1...e2!
- 1...exf3
- 1.Qb5?
- threat
- 2.Qd7#
- 2.Qxc5#
- 1...Sc3
- 2.Sxe3#
- 2.Qd7#
- 1...exf3!
- threat
- 1.Rxd1?
- Keys
- 1.Qd2!
- 1...exd2
- 2.fxe4#
- 1...exf3
- 2.Qxd3#
- 1...cxd4
- 2.Qa5#
- 1...Sb2
- 2.Sxe3#
- 1...Sf2
- 2.Sxe3#
- 1...Sc3
- 2.Sxe3#
- 1...e2
- 2.Sg3#
- 2.Qf4#
- 1...exd2
- 1.Qd2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD,XQ(C)::S(B),XP(c)
- S(a);N_GUARD::S(B),XP(c)
- P(e);OGATEB,XP(H)::QAR(C)
- Tries
- Try
- R(A);XS(a)
- Threat
- S(B),XP(c)
- Vars
- P(e);OGATEB,XP(H)::QAR(C)
- P(c);::S(B)
- Refutation
- P(d);XP(F)
- Try
- R(D);
- Threat
- S(B)
- Vars
- P(e);OGATEB,XP(H)::QAR(C)
- Refutation
- P(d);XP(F)
- Try
- Q(C);
- Vars
- P(d);OGATEB,P_SPINP(b),XP(F)::QAB(C),XP(b)
- P(e);OGATEB,XP(H)::QAR(C)
- S(a);N_GUARD::S(B),XP(c)
- Refutation
- P(c);
- Try
- Q(C);P_PINP(e)
- Threat
- DUALS(2)
- Refutation
- P(d);XP(F)
- Try
- Actual
- Q(C);
- Vars
- P(c);XQ(C)::P(F),XP(d)
- P(d);OGATEB,XP(F)::QAB(C),XP(b)
- P(e);OGATEB,XP(H)::QAR(C)
- S(a);N_GUARD::S(B),XP(c)
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).