MESON Chess Problem Database
Problem Display
PID: 66127 (RnN5/1P2p3/P7/bkPP4/RBpQp2r/8/8/K2B4 w - - 0 1)
Antonov, Yuri Mikhailovich
3rd Prize, Visserman MT, 1979
#2
11 + 7
SOLUTION
- SOUND
- Sets
- 1...Bxb4
- 2.Sa7#
- 1...Bc7
- 2.Sa7#
- 1...Bd8
- 2.Sa7#
- 1...Sxa6
- 2.Sa7#
- 1...c3
- 2.Rxa5#
- 1...e5
- 2.Sd6#
- 1...e6
- 2.Sd6#
- 1...Bxb4
- Tries
- 1.Be1?
- threat
- 2.Rxa5#
- 2.Qxc4#
- 1...Bxe1
- 2.Sa7#
- 2.Qxc4#
- 1...Bd2
- 2.Sa7#
- 2.Qxc4#
- 1...Bb4
- 2.Sa7#
- 1...Bb6
- 2.Qxc4#
- 1...Bc7
- 2.Sa7#
- 2.Qxc4#
- 1...Bd8
- 2.Sa7#
- 2.Qxc4#
- 1...Sc6
- 2.Qxc4#
- 1...c3
- 2.Be2#
- 2.Qc4#
- 1...e3
- 2.Rxa5#
- 1...Bc3+!
- threat
- 1.Bd2?
- threat
- 2.Rxa5#
- 2.Qxc4#
- 1...Bxd2
- 2.Sa7#
- 2.Qxc4#
- 1...Bb4
- 2.Sa7#
- 1...Bb6
- 2.Qxc4#
- 1...Bc7
- 2.Sa7#
- 2.Qxc4#
- 1...Bd8
- 2.Sa7#
- 2.Qxc4#
- 1...Sc6
- 2.Qxc4#
- 1...c3
- 2.Be2#
- 2.Qc4#
- 1...e3
- 2.Rxa5#
- 1...Bc3+!
- threat
- 1.Bc3?
- threat
- 2.Rxa5#
- 2.Qxc4#
- 1...e3
- 2.Rxa5#
- 1...Bb4
- 2.Sa7#
- 1...Bb6
- 2.Qxc4#
- 1...Bc7
- 2.Sa7#
- 2.Qxc4#
- 1...Bd8
- 2.Sa7#
- 2.Qxc4#
- 1...Sc6
- 2.Qxc4#
- 1...Bxc3+!
- threat
- 1.Bxa5?
- threat
- 2.Qxc4#
- 1...c3
- 2.Be2#
- 2.Qb4#
- 2.Qc4#
- 1...e3!
- threat
- 1.Qb2?
- threat
- 2.Rxa5#
- 1...Bxb4
- 2.Qxb4#
- 1...c3
- 2.Qe2#
- 1...Bb6
- 2.Ba3#
- 1...Bc7
- 2.Sa7#
- 2.Ba3#
- 1...Bd8
- 2.Sa7#
- 2.Ba3#
- 1...Sc6!
- threat
- 1.c6?
- threat
- 2.Qc5#
- 1...Bxb4
- 2.Sa7#
- 2.Qb6#
- 1...Sxa6
- 2.Sa7#
- 1...Bb6
- 2.Qxb6#
- 1...Sd7!
- threat
- 1.Be1?
- Keys
- 1.Qf6!
- threat
- 2.Sa7#
- 1...Bxb4
- 2.Qb6#
- 1...exf6
- 2.Sd6#
- 1...c3
- 2.Qf1#
- 1...Bb6
- 2.Qxb6#
- 1...Sc6
- 2.Qxc6#
- 1...e6
- 2.Sd6#
- threat
- 1.Qf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- B(d);XB(D)::S(K)
- B(d);::S(K)
- S(g);SBLOCK,XP(H)::S(K)
- P(a);::R1(C),XB(d)
- P(f);N_GUARD::S(K)
- Tries
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- B(d);::S(K)
- B(d);::QAB1(E),XP(a)
- S(g);::QAB1(E),XP(a)
- P(b);::R1(C),XB(d)
- Refutation
- B(d);CHECK
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- B(d);::S(K)
- B(d);::QAB1(E),XP(a)
- S(g);::QAB1(E),XP(a)
- P(b);::R1(C),XB(d)
- Refutation
- B(d);CHECK
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- P(b);::R1(C),XB(d)
- B(d);::S(K)
- B(d);::QAB1(E),XP(a)
- S(g);::QAB1(E),XP(a)
- Refutation
- B(d);CHECK,XB(D)
- Try
- B(D);XB(d)
- Threat
- QAB1(E),XP(a)
- Refutation
- P(b);
- Try
- Q(E);
- Threat
- R1(C),XB(d)
- Vars
- B(d);OGATE,P_SPINB(d),XB(D)::QAR1(E),XB(d)
- P(a);OGATEB::QAB(E)
- B(d);N_GUARD::QAR(E)+B(D)
- Refutation
- S(g);
- Try
- P(F);
- Threat
- QAR1(E)
- Vars
- S(g);SBLOCK,XP(H)::S(K)
- B(d);N_GUARD::QAR1(E),XB(d)
- Refutation
- S(g);
- Try
- Actual
- Q(E);
- Threat
- S(K)
- Vars
- B(d);N_GUARD,XB(D)::QAR1(E)
- P(f);N_GUARD,XQ(E)::S(K)
- P(a);OGATEB::QAB(E)
- B(d);N_GUARD::QAR1(E),XB(d)
- S(g);N_GUARD::QAB1(E),XS(g)
- P(f);N_GUARD::S(K)
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).