MESON Chess Problem Database
Problem Display
PID: 17028 (q3b3/1r4pR/1r3k2/5N1B/p5Qn/B5NK/1b6/4R3 w - - 0 1)
Umnov, Evgeny Ivanovich
Shakhmaty v SSSR, 1945
#2
8 + 9
| 3105 | FIDE Album (1945-1955) | 1964 |
| 102 | Probleemblad | 2007 |
| 133 | The Problemist Supplement | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Re7
- 2.Bxe7#
- 1...Rb8
- 2.Be7#
- 2.Qxg7#
- 1...Bb5
- 2.Bxb2#
- 1...Bd7
- 2.Be7#
- 2.Qxg7#
- 1...Bf7
- 2.Qxg7#
- 1...Sxf5
- 2.Qxf5#
- 1...Re7
- Tries
- 1.Se7?
- threat
- 2.Sd5#
- 2.Sg8#
- 2.Qxg7#
- 1...Rxe7
- 2.Bxe7#
- 1...Bxh5
- 2.Qxg7#
- 1...Sg6
- 2.Qf5#
- 1...Qc8
- 2.Sd5#
- 2.Sg8#
- 1...Qa5
- 2.Sg8#
- 2.Qxg7#
- 1...Qd8
- 2.Sg8#
- 2.Qxg7#
- 1...Rb5
- 2.Sg8#
- 2.Re6#
- 2.Qxg7#
- 1...Rd6
- 2.Sg8#
- 2.Qxg7#
- 1...Ra7
- 2.Sg8#
- 2.Qxg7#
- 1...Rc7
- 2.Sg8#
- 2.Qxg7#
- 1...Rd7
- 2.Sg8#
- 2.Qxg7#
- 1...Rb8
- 2.Sg8#
- 2.Qxg7#
- 1...Be5
- 2.Se4#
- 2.Sd5#
- 2.Sg8#
- 1...Bb5
- 2.Sd5#
- 2.Bxb2#
- 2.Qxg7#
- 1...Bc6
- 2.Re6#
- 2.Qxg7#
- 1...Bd7
- 2.Sd5#
- 1...Bf7
- 2.Qxg7#
- 1...Sf5
- 2.Sd5#
- 2.Sg8#
- 2.Qxf5#
- 1...g5
- 2.Sd5#
- 2.Sg8#
- 1...g6
- 2.Sd5#
- 2.Sg8#
- 1...Bg6!
- threat
- 1.Re7?
- threat
- 2.Se4#
- 2.Qxg7#
- 1...Sxf5
- 2.Se4#
- 2.Qxf5#
- 1...Re6
- 2.Qxg7#
- 1...Rb3
- 2.Qxg7#
- 1...Rb4
- 2.Qxg7#
- 1...Ra7
- 2.Qxg7#
- 1...Rc7
- 2.Qxg7#
- 1...Rd7
- 2.Qxg7#
- 1...Rb8
- 2.Qxg7#
- 1...Bc6
- 2.Qxg7#
- 1...Bg6
- 2.Se4#
- 2.Qxh4#
- 1...Sg6
- 2.Se4#
- 1...g5
- 2.Se4#
- 1...g6
- 2.Se4#
- 1...Rxe7!
- threat
- 1.Qd4+?
- 1...Kg5
- 2.Qxh4#
- 1...Bxd4!
- 1...Kg5
- 1.Se7?
- Keys
- 1.Sh6!
- threat
- 2.Sg8#
- 1...Bxh5
- 2.Sxh5#
- 1...gxh6
- 2.Qxh4#
- 1...Bb5
- 2.Bxb2#
- 1...Bc6
- 2.Re6#
- 1...Bg6
- 2.Qxh4#
- 1...Bd7
- 2.Be7#
- 1...Bf7
- 2.Qxg7#
- 1...Sg6
- 2.Qf5#
- threat
- 1.Sh6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 2
- Sets
- R(f);N_GUARD::B(B),XR(f)
- B(i);S_CUTR(d)::B(B),XB(a)
- B(i);S_CUTR(f)::QAB1(E),XP(g)
- S(c);OGATE,XS(F)::QAR1(E),XS(c)
- Tries
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- R(f);OGATE,XS(F)::B(B),XR(f)
- B(i);XB(G)::QAB1(E),XP(g)
- S(c);N_GUARD::QAR1(E)
- B(i);P_PINQ(E)::S(F)
- B(i);::QAB1(E),XP(g)
- Refutation
- B(i);
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- R(d);::QAB1(E),XP(g)
- R(d);P_PINS(C)::QAB1(E),XP(g)
- R(f);::QAB1(E),XP(g)
- B(i);::QAB1(E),XP(g)
- S(c);::S(C)
- P(g);::S(C)
- Refutation
- R(f);XR(A)
- Try
- Q(E);CHECK
- Vars
- K(e);S_FLIGHT::QAB1(E),XS(c)
- Refutation
- B(a);XQ(E)
- Try
- Actual
- S(F);
- Threat
- S(F)
- Vars
- B(i);XB(G)::S(C),XB(i)
- P(g);N_GUARD,XS(F)::QAB(E),XS(c)
- B(i);S_CUTR(d)::B(B),XB(a)
- B(i);S_CUTR(d)::R1(A)
- B(i);S_CUTP(g)::QAB(E),XS(c)
- B(i);P_PINQ(E),S_CUTR(f)::B(B)
- B(i);S_CUTR(f)::QAB1(E),XP(g)
- S(c);N_GUARD::QAR1(E)
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).