MESON Chess Problem Database
Problem Display
PID: 103120 (1KR5/4RNp1/1p3b1r/3k4/pr1P4/qp6/2P3b1/1n1Q4 w - - 0 1)
Macs, Valdemar
Latvian Championship, 1950
#2
7 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxd4
- 2.c4#
- 1...Rb5
- 2.c4#
- 1...Bxd4
- 2.Re5#
- 1...Bh4
- 2.Re5#
- 1...Be5+
- 2.Rxe5#
- 1...Bg5
- 2.Re5#
- 1...b5
- 2.Rc5#
- 1...Rxd4
- Tries
- 1.Rd7+?
- 1...Ke6
- 2.Qg4#
- 1...Ke4!
- 1...Ke6
- 1.Rd8+?
- 1...Kc4
- 2.Qd3#
- 1...Kc6!
- 1...Kc4
- 1.Qf3+?
- 1...Kxd4
- 2.Rd7#
- 2.Qd3#
- 1...Bxf3!
- 1...Kxd4
- 1.Rd7+?
- Keys
- 1.Qe2!
- threat
- 2.Rd7#
- 1...Be5+
- 2.Qxe5#
- 1...Kxd4
- 2.Qd3#
- 1...Rxd4
- 2.Qe6#
- 1...Bxd4
- 2.Qxg2#
- 1...Bxe7
- 2.Qe5#
- 1...Rc4
- 2.Qxc4#
- 1...Rb5
- 2.Qc4#
- 1...Bh3
- 2.Qe4#
- 1...Be4
- 2.Qxe4#
- 1...Bh4
- 2.Qe5#
- 1...Bg5
- 2.Qe5#
- threat
- 1.Qe2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 6
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- R(f);N_GUARD,P_SPINR(f),XP(C)::P(B)
- R(f);N_GUARD::P(B)
- B(i);N_GUARD,P_SPINB(i),XP(C)::R1(D)
- B(i);N_GUARD::R1(D)
- B(i);CHECK,N_GUARD::R1(D),XB(i)
- P(h);N_GUARD::R1(G)
- Tries
- Try
- R(D);CHECK
- Vars
- K(g);S_FLIGHT::QAB(A)
- Refutation
- K(g);S_FLIGHT
- Try
- R(G);CHECK
- Vars
- K(g);S_FLIGHT::QAB1(A)
- Refutation
- K(g);S_FLIGHT
- Try
- Q(A);CHECK
- Refutation
- B(b);XQ(A)
- Try
- Actual
- Q(A);
- Threat
- R(D)
- Vars
- B(i);CHECK,N_GUARD::QAR1(A),XB(i)
- K(g);OGATEB,P-FLIGHT,XP(C)::QAR1(A)
- R(f);SBLOCK,XP(C)::QAB1(A)
- B(i);SBLOCK,XP(C)::QAB(A),XB(b)
- B(i);N_GUARD,XR(D)::QAR1(A)
- R(f);N_GUARD::QAB1(A),XR(f)
- R(f);N_GUARD::QAB1(A)
- B(b);N_GUARD::QAB1(A)
- B(b);N_GUARD::QAB1(A),XB(b)
- B(i);N_GUARD::QAR1(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).