MESON Chess Problem Database
Problem Display
PID: 204526 (8/n1R2K2/pb1k4/2R1Np2/3p4/rB6/4Q3/2q1n3 w - - 0 1)
Kobets, Vasily Dimitrevich
64 Shakhmatnoe obozrenie, 1925
#2
6 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Sc4#
- 1...Qd2
- 2.Sc4#
- 1...Qe3
- 2.Sc4#
- 1...Qf4
- 2.Sc4#
- 1...Qg5
- 2.Sc4#
- 1...Qh6
- 2.Sc4#
- 1...Qa1
- 2.Sc4#
- 1...Qb1
- 2.Sc4#
- 1...Qd1
- 2.Sc4#
- 1...Qc4+
- 2.Sxc4#
- 1...Qxc5
- 2.Rd7#
- 1...Bxc5
- 2.Rd7#
- 1...Bxc7
- 2.Rd5#
- 1...Sc2
- 2.Sc4#
- 1...Sb5
- 2.R7c6#
- 1...Sc6
- 2.R7xc6#
- 1...Sc8
- 2.R7c6#
- 1...Qb2
- Tries
- 1.Qc4?
- threat
- 2.Rd5#
- 2.Rd7#
- 2.Qd5#
- 2.Qe6#
- 2.Qxd4#
- 1...Qxc4+
- 2.Sxc4#
- 1...Bxc7
- 2.Rd5#
- 2.Qd5#
- 2.Qxd4#
- 1...Sc6
- 2.R7xc6#
- 2.Rd7#
- 1...Qb2
- 2.Rd5#
- 2.Rd7#
- 2.Qd5#
- 2.Qe6#
- 1...Qd2
- 2.Rd5#
- 2.Rd7#
- 2.Qd5#
- 2.Qe6#
- 1...Qe3
- 2.Rd5#
- 2.Rd7#
- 2.Qd5#
- 2.Qe6#
- 1...Qf4
- 2.Rd5#
- 2.Rd7#
- 2.Qd5#
- 2.Qe6#
- 1...Qh6
- 2.Rd5#
- 2.Rd7#
- 2.Qd5#
- 2.Qxd4#
- 1...Qa1
- 2.Rd5#
- 2.Rd7#
- 2.Qd5#
- 2.Qe6#
- 1...Qd1
- 2.Rd5#
- 2.Rd7#
- 2.Qd5#
- 2.Qe6#
- 1...Qc3
- 2.Rd5#
- 2.Rd7#
- 2.Qd5#
- 2.Qe6#
- 1...Ra4
- 2.Rd5#
- 2.Rd7#
- 2.Qd5#
- 2.Qe6#
- 1...Ra5
- 2.Rd7#
- 2.Qd5#
- 2.Qe6#
- 2.Qxd4#
- 1...Sc2
- 2.Rd5#
- 2.Rd7#
- 2.Qd5#
- 2.Qe6#
- 1...Sf3
- 2.Rd5#
- 2.Rd7#
- 2.Qd5#
- 2.Qe6#
- 1...Sb5
- 2.Rd5#
- 2.R7c6#
- 2.Rd7#
- 2.Qd5#
- 2.Qe6#
- 1...d3
- 2.Rd5#
- 2.Rd7#
- 2.Qd5#
- 2.Qe6#
- 2.Qd4#
- 1...Bxc5!
- threat
- 1.Qe4?
- threat
- 2.Qd5#
- 2.Qxd4#
- 1...Qc4+
- 2.Sxc4#
- 1...Qxc5
- 2.Rd7#
- 1...Bxc5
- 2.Rd7#
- 1...Sc6
- 2.R7xc6#
- 2.Qxc6#
- 1...Qb2
- 2.Sc4#
- 2.Qd5#
- 1...Qd2
- 2.Sc4#
- 2.Qd5#
- 1...Qe3
- 2.Sc4#
- 2.Qd5#
- 1...Qf4
- 2.Sc4#
- 2.Qd5#
- 1...Qa1
- 2.Sc4#
- 2.Qd5#
- 1...Qd1
- 2.Sc4#
- 2.Qd5#
- 1...Qc3
- 2.Qd5#
- 1...Ra4
- 2.Qd5#
- 1...Sc2
- 2.Sc4#
- 2.Qd5#
- 1...Sf3
- 2.Qd5#
- 1...Sb5
- 2.R7c6#
- 2.Qd5#
- 2.Qc6#
- 1...d3
- 2.Qd5#
- 2.Qd4#
- 1...fxe4!
- threat
- 1.Qc4?
- Keys
- 1.Qh2!
- threat
- 2.Sc4#
- 1...Qc4+
- 2.Sxc4#
- 1...Qxc5
- 2.Rd7#
- 1...Bxc5
- 2.Rd7#
- 1...Bxc7
- 2.Rd5#
- 1...Sc6
- 2.R7xc6#
- 1...f4
- 2.Qh6#
- threat
- 1.Qh2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 12
- Sets
- Q(a);N_GUARD::S(D)
- Q(a);CHECK,N_GUARD::S(D),XQ(a)
- Q(a);SBLOCK,XR(C)::R1(E)
- B(g);SBLOCK,XR(C)::R1(E)
- B(g);SBLOCK,XR(E)::R1(C)
- S(b);S_CUTQ(a)::S(D)
- S(i);N_GUARD::R1(E)
- S(i);N_GUARD::R1(E),XS(i)
- Tries
- Try
- Q(A);
- Threat
- DUALS(5)
- Vars
- Q(a);CHECK,XQ(A)::S(D),XQ(a)
- Refutation
- B(g);XR(C)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,N_GUARD::S(D),XQ(a)
- Q(a);SBLOCK,XR(C)::R1(E)
- B(g);SBLOCK,XR(C)::R1(E)
- Q(a);::QAR1(A)
- R(c);::QAR1(A)
- S(b);::QAR1(A)
- Refutation
- P(e);XQ(A)
- Try
- Actual
- Q(A);
- Threat
- QAB(A)+S(D),DCHECK
- Vars
- Q(a);CHECK::QAB(A)+S(D),DCHECK,XQ(a)
- Q(a);SBLOCK,XR(C)::R1(E)
- B(g);SBLOCK,XR(C)::R1(E)
- B(g);SBLOCK,XR(E)::R1(C)
- S(i);N_GUARD::R1(E),XS(i)
- P(e);S_CUTQ(a)::QAR(A)
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).