MESON Chess Problem Database
Problem Display
PID: 229067 (Bbbr1q2/4p3/5r2/2N5/p2p4/K2Q4/4Pk1P/1R4N1 w - - 0 1)
Neiman, Moisei Borisovich
64 Shakhmatnoe obozrenie, 1926
#2
8 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Rf4
- 2.Qg3#
- 1...Rf5
- 2.Sh3#
- 1...Rfd6
- 2.Qg3#
- 1...Re6
- 2.Sh3#
- 1...Rdd6
- 2.Qg3#
- 1...Rd7
- 2.Sh3#
- 1...Re8
- 2.Qxd4#
- 1...Bg3
- 2.Qxg3#
- 1...Bf4
- 2.Qf3#
- 1...Bd6
- 2.Qxd4#
- 1...Ba7
- 2.Qg3#
- 1...Bh3
- 2.Sxh3#
- 1...Bf5
- 2.Qf3#
- 1...Ba6
- 2.Sh3#
- 1...Bd7
- 2.Qxd4#
- 1...e5
- 2.Qg3#
- 1...e6
- 2.Sh3#
- 1...Rf4
- Tries
- 1.Qd2?
- threat
- 2.Sd3#
- 2.e3#
- 2.e4#
- 1...Rf3+
- 2.exf3#
- 2.e3#
- 1...Rc6
- 2.e3#
- 2.e4#
- 1...Rd5
- 2.e3#
- 2.e4#
- 1...Bb7
- 2.e3#
- 2.e4#
- 1...Qh6
- 2.Sd3#
- 2.e3#
- 1...Bf4
- 2.Sd3#
- 2.e3#
- 1...Bd6
- 2.Qxd4#
- 2.e3#
- 2.e4#
- 1...Bg4
- 2.Sd3#
- 1...Bf5
- 2.e3#
- 2.e4#
- 1...Ba6
- 2.Sh3#
- 1...d3
- 2.exd3#
- 2.e3#
- 2.e4#
- 1...e5
- 2.e3#
- 2.e4#
- 1...e6
- 2.Sh3#
- 2.e3#
- 2.e4#
- 1...Bxh2!
- threat
- 1.e3?
- threat
- 2.Rf1#
- 2.Qe2#
- 2.Qd2#
- 1...dxe3
- 2.Rf1#
- 2.Qf1#
- 2.Qe2#
- 1...Rf3
- 2.Qe2#
- 2.Qd2#
- 1...Rc6
- 2.Qe2#
- 2.Qd2#
- 1...Rd5
- 2.Qe2#
- 2.Qd2#
- 1...Bb7
- 2.Qe2#
- 2.Qd2#
- 1...Bh3
- 2.Sxh3#
- 2.Qe2#
- 2.Qd2#
- 1...Bg4
- 2.Rf1#
- 1...Ba6
- 2.Sh3#
- 2.Rf1#
- 1...Bxh2!
- threat
- 1.Qd2?
- Keys
- 1.Bh1!
- threat
- 2.Se4#
- 1...Rf4
- 2.Qg3#
- 1...Re6
- 2.Sh3#
- 1...Bd6
- 2.Qxd4#
- 1...Bf5
- 2.Qf3#
- 1...Bb7
- 2.Sh3#
- 1...e5
- 2.Qg3#
- 1...e6
- 2.Sh3#
- threat
- 1.Bh1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 11
- Sets
- R(d);S_CUTB(f)::QAB1(F)
- R(d);S_CUTB(g)::S(B)
- R(h);S_CUTB(f)::QAB1(F)
- R(h);S_CUTB(g)::S(B)
- R(h);N_GUARD::QAB(F),XP(c)
- B(f);N_GUARD::QAB1(F),XB(f)
- B(f);S_CUTR(d)::QAR1(F)
- B(f);P_PINS(G),S_CUTR(h)::QAB(F),XP(c)
- B(f);N_GUARD::QAB1(F)
- B(g);N_GUARD::S(B),XB(g)
- B(g);S_CUTR(d)::QAR1(F)
- B(g);N_GUARD::S(B)
- B(g);S_CUTR(h)::QAB(F),XP(c)
- P(e);P_PINS(G),S_CUTB(f)::QAB1(F)
- P(e);P_PINS(G),S_CUTB(g)::S(B)
- Tries
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- B(g);::S(G)
- B(g);N_GUARD::S(B)
- Refutation
- B(f);XP(D)
- Try
- P(C);
- Threat
- DUALS(3)
- Vars
- B(g);::R1(A)
- Refutation
- B(f);XP(D)
- Try
- Actual
- B(H);
- Threat
- S(G)
- Vars
- R(d);S_CUTB(f)::QAB1(F)
- R(d);S_CUTB(g)::S(B)
- B(f);P_PINS(G),S_CUTR(h)::QAB(F),XP(c)
- B(g);S_CUTR(d)::QAR1(F)
- B(g);N_GUARD::S(B)
- P(e);P_PINS(G),S_CUTB(f)::QAB1(F)
- P(e);P_PINS(G),S_CUTB(g)::S(B)
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).