MESON Chess Problem Database
Problem Display
PID: 231325 (2r5/1n2p1B1/Q3R3/3k4/N3p3/1n6/2R5/1K6 w - - 0 1)
Kubbel, Arvid Ivanovich
64 Shakhmatnoe obozrenie, 1927
#2
6 + 6
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rc4
- 2.Qxc4#
- 1...Rc6
- 2.Qxc6#
- 1...Ra8
- 2.Qc4#
- 2.Qc6#
- 1...Rb8
- 2.Qc4#
- 2.Qc6#
- 1...Rd8
- 2.Qc4#
- 2.Qc6#
- 1...Re8
- 2.Qc4#
- 2.Qc6#
- 1...Rf8
- 2.Qc4#
- 2.Qc6#
- 1...Rg8
- 2.Qc4#
- 2.Qc6#
- 1...Rh8
- 2.Qc4#
- 2.Qc6#
- 1...Sa1
- 2.Rd2#
- 1...Sd2+
- 2.Rxd2#
- 1...Sd4
- 2.Re5#
- 1...S3a5
- 2.Rd2#
- 1...S3c5
- 2.Sc3#
- 2.Qc4#
- 1...S7c5
- 2.Sc3#
- 2.Qc4#
- 1...Rc4
- Tries
- 1.Sc3+?
- 1...Kc5
- 2.Qb5#
- 1...Rxc3!
- 1...Kc5
- 1.Rd2+?
- 1...Sd4
- 2.Rxd4#
- 2.Re5#
- 1...Sxd2+!
- 1...Sd4
- 1.Rc5+?
- 1...S3xc5
- 2.Sc3#
- 1...S7xc5
- 2.Sc3#
- 1...Rxc5!
- 1...S3xc5
- 1.Rec6?
- threat
- 2.Sc3#
- 2.Sb6#
- 2.Qc4#
- 1...Sd2+
- 2.Rxd2#
- 1...Rxc6
- 2.Qxc6#
- 1...e3
- 2.Sc3#
- 2.Qc4#
- 1...e5
- 2.Qc4#
- 1...S3a5
- 2.Sc3#
- 2.Sb6#
- 2.Rd2#
- 1...S3c5
- 2.Sc3#
- 1...S7a5
- 2.Sc3#
- 2.Sb6#
- 1...S7c5
- 2.Sc3#
- 1...Sd6!
- threat
- 1.Rg6?
- threat
- 2.Sb6#
- 2.Qe6#
- 1...Sd2+
- 2.Rxd2#
- 1...Rxc2
- 2.Qe6#
- 1...e3
- 2.Qe6#
- 1...Sd4
- 2.Sb6#
- 1...Rc3
- 2.Qe6#
- 1...Rc4
- 2.Qxc4#
- 2.Qe6#
- 1...Rc6
- 2.Qxc6#
- 1...S3c5
- 2.Sc3#
- 2.Sb6#
- 2.Qc4#
- 1...S7c5
- 2.Sc3#
- 2.Sb6#
- 2.Qc4#
- 1...Sd6
- 2.Sb6#
- 1...Sd8
- 2.Sb6#
- 1...e6
- 2.Qxe6#
- 1...e5!
- threat
- 1.Rh6?
- threat
- 2.Sb6#
- 2.Qe6#
- 1...Sd2+
- 2.Rxd2#
- 1...Rxc2
- 2.Qe6#
- 1...e3
- 2.Qe6#
- 1...Sd4
- 2.Sb6#
- 1...Rc3
- 2.Qe6#
- 1...Rc4
- 2.Qxc4#
- 2.Qe6#
- 1...Rc6
- 2.Qxc6#
- 1...S3c5
- 2.Sc3#
- 2.Sb6#
- 2.Qc4#
- 1...S7c5
- 2.Sc3#
- 2.Sb6#
- 2.Qc4#
- 1...Sd6
- 2.Sb6#
- 1...Sd8
- 2.Sb6#
- 1...e6
- 2.Qxe6#
- 1...e5!
- threat
- 1.Qxb7+?
- 1...Rc6
- 2.Qxc6#
- 1...Kxe6!
- 1...Rc6
- 1.Sc3+?
- Keys
- 1.Rxe7!
- threat
- 2.Qe6#
- 1...Sd2+
- 2.Rxd2#
- 1...Rc6
- 2.Qxc6#
- 1...Sd4
- 2.Re5#
- 1...S3c5
- 2.Sc3#
- 1...S7c5
- 2.Sc3#
- 1...Sd6
- 2.Sb6#
- 1...Sd8
- 2.Rd7#
- threat
- 1.Rxe7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- R(f);N_GUARD::QAB1(D),XR(f)
- S(a);N_GUARD::R(B)
- S(a);CHECK,N_GUARD::R(B),XS(a)
- S(a);SBLOCK::R1(E)
- Tries
- Try
- S(C);CHECK
- Vars
- K(c);P-FLIGHT::QAR1(D)
- Refutation
- R(f);XS(C)
- Try
- R(B);CHECK
- Refutation
- S(a);CHECK,XR(B)
- Try
- R(B);CHECK
- Vars
- S(a);SBLOCK,XR(B)::S(C)
- S(d);SBLOCK,XR(B)::S(C)
- Refutation
- R(f);XR(B)
- Try
- R(E);
- Threat
- DUALS(3)
- Vars
- S(a);CHECK,N_GUARD::R(B),XS(a)
- R(f);OGATE,XR(E)::QAB1(D),XR(f)
- P(e);::QAB1(D)
- S(a);::S(C)
- S(d);::S(C)
- Refutation
- S(d);
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::R(B),XS(a)
- R(f);XR(B)::QAB1(D)
- P(b);::QAB1(D)
- S(a);::S(C)
- R(f);::QAB1(D)
- R(f);N_GUARD::QAB1(D),XR(f)
- S(d);::S(C)
- P(e);::QAB1(D),XP(e)
- Refutation
- P(e);
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- S(a);CHECK,N_GUARD::R(B),XS(a)
- R(f);XR(B)::QAB1(D)
- P(b);::QAB1(D)
- S(a);::S(C)
- R(f);::QAB1(D)
- R(f);N_GUARD::QAB1(D),XR(f)
- S(d);::S(C)
- P(e);::QAB1(D),XP(e)
- Refutation
- P(e);
- Try
- Q(D);CHECK,XS(d)
- Vars
- R(f);N_GUARD,P_SPINR(f)::QAB1(D),XR(f)
- Refutation
- K(c);S_FLIGHT,XR(E)
- Try
- Actual
- R(E);XP(e)
- Threat
- QAB1(D)
- Vars
- S(a);CHECK,N_GUARD::R(B),XS(a)
- R(f);N_GUARD::QAB1(D),XR(f)
- S(a);SBLOCK::R1(E)
- S(a);SBLOCK,S_CUTR(f)::S(C)
- S(d);SBLOCK,S_CUTR(f)::S(C)
- S(d);SBLOCK::S(C)
- S(d);N_GUARD::R(E)
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).