MESON Chess Problem Database
Problem Display
PID: 259547 (4NN2/3p2q1/2P5/PPkp4/P5nR/1BB3p1/2Q2r1b/K2R3b w - - 0 1)
Anonymous
Vecherni Moskva, 1932
#2
12 + 9
| 15239 | Valois Notebooks | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qxc3+
- 2.Qxc3#
- 1...Qd4
- 2.Sxd7#
- 1...Qe5
- 2.Sxd7#
- 1...Qf6
- 2.Sxd7#
- 1...Qh6
- 2.Sxd7#
- 1...Qh8
- 2.Sxd7#
- 1...Qg5
- 2.Sxd7#
- 1...Qg6
- 2.Sxd7#
- 1...Qg8
- 2.Sxd7#
- 1...Rg2
- 2.Rxd5#
- 1...Rf3
- 2.Rxd5#
- 1...Rf6
- 2.Be1#
- 1...Se5
- 2.Bb4#
- 1...Sf6
- 2.Bd2#
- 2.Bb4#
- 1...g2
- 2.Rxd5#
- 1...d4
- 2.Bd2#
- 1...dxc6
- 2.Se6#
- 1...d6
- 2.Se6#
- 1...Qxc3+
- Keys
- 1.c7!
- threat
- 2.c8Q#
- 2.c8R#
- 1...Qxc3+
- 2.Qxc3#
- 1...Qxf8
- 2.c8Q#
- 2.c8R#
- 1...Rxc2
- 2.c8Q#
- 2.c8R#
- 1...Rxf8
- 2.c8Q#
- 2.c8R#
- 1...Qd4
- 2.Sxd7#
- 2.c8Q#
- 2.c8R#
- 1...Qe5
- 2.Sxd7#
- 1...Qf6
- 2.Sxd7#
- 1...Qh6
- 2.Sxd7#
- 1...Qh8
- 2.Sxd7#
- 2.c8Q#
- 2.c8R#
- 1...Qg5
- 2.Sxd7#
- 2.c8Q#
- 2.c8R#
- 1...Qg6
- 2.Sxd7#
- 1...Qe7
- 2.c8Q#
- 2.c8R#
- 1...Qf7
- 2.c8Q#
- 2.c8R#
- 1...Qh7
- 2.c8Q#
- 2.c8R#
- 1...Qg8
- 2.Sxd7#
- 2.c8Q#
- 2.c8R#
- 1...Rf1
- 2.c8Q#
- 2.c8R#
- 1...Rd2
- 2.c8Q#
- 2.c8R#
- 1...Re2
- 2.c8Q#
- 2.c8R#
- 1...Rg2
- 2.Rxd5#
- 2.c8Q#
- 2.c8R#
- 1...Rf3
- 2.Rxd5#
- 2.c8Q#
- 2.c8R#
- 1...Rf4
- 2.c8Q#
- 2.c8R#
- 1...Rf5
- 2.c8Q#
- 2.c8R#
- 1...Rf6
- 2.Be1#
- 1...Rf7
- 2.c8Q#
- 2.c8R#
- 1...Bg2
- 2.c8Q#
- 2.c8R#
- 1...Bf3
- 2.c8Q#
- 2.c8R#
- 1...Be4
- 2.c8Q#
- 2.c8R#
- 1...Bg1
- 2.c8Q#
- 2.c8R#
- 1...Se3
- 2.c8Q#
- 2.c8R#
- 1...Se5
- 2.Bb4#
- 1...Sf6
- 2.Bd2#
- 2.Bb4#
- 2.c8Q#
- 2.c8R#
- 1...Sh6
- 2.c8Q#
- 2.c8R#
- 1...g2
- 2.Rxd5#
- 1...d4
- 2.Bd2#
- 1...d6
- 2.Se6#
- threat
- 1.c7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 7
- Sets
- Q(i);CHECK,OGATE,P_SPINQ(i),XB(E)::QAR2(C),XQ(i)
- Q(i);N_GUARD::S(L),XP(h)
- Q(i);N_GUARD,N_PINB(E)::S(L),XP(h)
- R(b);S_CUTB(a)::R1(B),XP(g)
- R(b);N_PINB(E)::QAR(C)+B(E)
- S(e);N_PINB(E)::QAR(C)+B(E),DCHECK
- P(d);S_CUTB(a)::R1(B),XP(g)
- P(g);N_PINB(E),SBLOCK::QAR(C)+B(E)
- P(h);N_GUARD,XP(J)::S(L)
- P(h);N_GUARD::S(L)
- Actual
- P(J);
- Threat
- P=Q
- Vars
- Q(i);CHECK,OGATE,P_SPINQ(i),XB(E)::QAR2(C),XQ(i)
- Q(i);N_PINB(E),XS(L)::P=Q
- R(b);XQ(C)::P=Q
- R(b);XS(L)::P=Q
- Q(i);N_GUARD::S(L),XP(h)
- Q(i);N_GUARD,N_PINB(E)::S(L),XP(h)
- Q(i);N_PINB(E)::P=Q
- R(b);P_PINR(B)::P=Q
- R(b);::P=Q
- R(b);N_PINB(E)::QAR(C)+B(E)
- B(a);::P=Q
- B(c);::P=Q
- S(e);::P=Q
- S(e);N_PINB(E)::QAR(C)+B(E),DCHECK
- P(d);S_CUTB(a)::R1(B),XP(g)
- P(g);N_PINB(E),SBLOCK::QAR(C)+B(E)
- P(h);N_GUARD::S(L)
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).