MESON Chess Problem Database
Problem Display
PID: 275067 (2R1B3/r1b2N2/1N2pp2/P1k4r/1R3p2/Pp1b1p1p/2p4K/2Q4n w - - 0 1)
Dolginovich, Nikolai Osipovich
Mat, 1980
#2
9 + 13
SOLUTION
- SOUND
- Sets
- 1...Rd5
- 2.Sa4#
- 1...Rxa5
- 2.Rxc7#
- 1...Ra6
- 2.Rxc7#
- 1...Ra8
- 2.Rxc7#
- 1...Bc4
- 2.Rxc4#
- 1...Be4
- 2.Rc4#
- 1...Bf5
- 2.Rc4#
- 1...Bg6
- 2.Rc4#
- 1...Bh7
- 2.Rc4#
- 1...Rd5
- Tries
- 1.Rxf4?
- threat
- 2.Qe3#
- 1...Rd5
- 2.Sa4#
- 1...Re5!
- threat
- 1.Qb2?
- threat
- 2.Qd4#
- 1...Rd5
- 2.Sa4#
- 1...Bc4
- 2.Rxc4#
- 1...e5!
- threat
- 1.Qg1+?
- 1...Sf2
- 2.Qxf2#
- 1...f2!
- 1...Sf2
- 1.Qxc2+?
- 1...Bxc2
- 2.Rc4#
- 1...Bc4
- 2.Rxc4#
- 2.Qxc4#
- 1...bxc2!
- 1...Bxc2
- 1.Rxf4?
- Keys
- 1.Qxf4!
- threat
- 2.Qd6#
- 1...Rd5
- 2.Sa4#
- 1...Re5
- 2.Qd4#
- 1...e5
- 2.Qe3#
- threat
- 1.Qxf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- R(i);SBLOCK::S(F)
- R(l);N_GUARD,XP(E)::R(H),XB(m)
- R(l);N_GUARD::R(H),XB(m)
- B(d);N_GUARD,N_SPINP(b)::R1(D),XB(d)
- B(d);N_GUARD::R1(D)
- Tries
- Try
- R(D);P_SPINR(D),XP(g)
- Threat
- QAB(A)
- Vars
- R(i);SBLOCK::S(F)
- Refutation
- R(i);N_PINR(D)
- Try
- Q(A);N_PINP(b)
- Threat
- QAB1(A)
- Vars
- R(i);SBLOCK::S(F)
- B(d);N_GUARD::R1(D),XB(d)
- Refutation
- P(j);
- Try
- Q(A);CHECK,N_PINP(b)
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAB(A),XS(a)
- Refutation
- P(e);P_SPINP(e)
- Try
- Q(A);CHECK,XP(b)
- Vars
- B(d);N_GUARD,XQ(A)::R1(D)
- Refutation
- P(c);XQ(A)
- Try
- Actual
- Q(A);N_PINP(b),P_SPINQ(A),XP(g)
- Threat
- QAB1(A)
- Vars
- R(i);SBLOCK::S(F)
- R(i);N_PINQ(A)::QAB1(A)
- P(j);N_PINQ(A)::QAB(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).