MESON Chess Problem Database
Problem Display
PID: 229061 (1B2r3/5Q2/2b4b/1p3p1n/4k3/3R4/K3p3/1B4nq w - - 0 1)
Kalina, Vasily Emanuilovich
Comm., Essener Arbeiter Zeitung, 1926
#2
5 + 10
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Re6
- 2.Qxe6#
- 1...Re7
- 2.Qxe7#
- 1...Rc8
- 2.Qe6#
- 2.Qe7#
- 1...Rd8
- 2.Qe6#
- 2.Qe7#
- 1...Rf8
- 2.Qe6#
- 2.Qe7#
- 1...Rg8
- 2.Qe6#
- 2.Qe7#
- 1...Rh8
- 2.Qe6#
- 2.Qe7#
- 1...Bd5+
- 2.Qxd5#
- 1...Bb7
- 2.Qxe8#
- 2.Qxb7#
- 1...Bd7
- 2.Qd5#
- 1...Ba8
- 2.Qxe8#
- 1...b4
- 2.Qc4#
- 1...f4
- 2.Qg6#
- 2.Qh7#
- 1...Re6
- Tries
- 1.Re3+?
- 1...Kd4
- 2.Ba7#
- 1...Kxe3!
- 1...Kd4
- 1.Qf6?
- threat
- 2.Qd4#
- 2.Qxc6#
- 1...Bd5+
- 2.Rb3#
- 1...Rxb8
- 2.Qd4#
- 1...Re5
- 2.Qxe5#
- 1...Be3
- 2.Qxc6#
- 1...Re6
- 2.Qd4#
- 2.Qxe6#
- 1...Rc8
- 2.Qd4#
- 2.Qe5#
- 2.Qe7#
- 2.Qe6#
- 1...Rd8
- 2.Qe5#
- 2.Qe7#
- 2.Qe6#
- 1...Bb7
- 2.Qd4#
- 1...Bd7
- 2.Qd4#
- 1...Ba8
- 2.Qd4#
- 1...Bg7
- 2.Qxc6#
- 1...Sf3
- 2.Qxc6#
- 1...Sf4
- 2.Qd4#
- 1...f4
- 2.Qg6#
- 1...Sxf6!
- threat
- 1.Qd7?
- threat
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rg3#
- 2.Rh3#
- 2.Qxc6#
- 2.Qd4#
- 1...Bd5+
- 2.Qxd5#
- 1...Rxb8
- 2.Qd4#
- 1...Re5
- 2.Qd4#
- 1...Be3
- 2.Qxc6#
- 1...e1Q
- 2.Qxc6#
- 2.Qd4#
- 1...e1S
- 2.Qxc6#
- 2.Qd4#
- 1...e1R
- 2.Qxc6#
- 2.Qd4#
- 1...Qf3
- 2.Qxc6#
- 2.Qd4#
- 1...Qh3
- 2.Rg3#
- 2.Rxh3#
- 2.Qxc6#
- 2.Qd4#
- 1...Re6
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rg3#
- 2.Rh3#
- 2.Qxe6#
- 2.Qd4#
- 1...Rc8
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rg3#
- 2.Rh3#
- 2.Qe6#
- 2.Qd4#
- 2.Qe7#
- 1...Rd8
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rg3#
- 2.Rh3#
- 2.Qe6#
- 2.Qe7#
- 1...Bb7
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rg3#
- 2.Rh3#
- 2.Qxe8#
- 2.Qd4#
- 2.Qxb7#
- 1...Ba8
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rg3#
- 2.Rh3#
- 2.Qxe8#
- 2.Qd4#
- 1...Bg7
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rg3#
- 2.Rh3#
- 2.Qxc6#
- 1...Sf3
- 2.Qxc6#
- 1...Sh3
- 2.Qxc6#
- 2.Qd4#
- 1...Sg3
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rxg3#
- 2.Qxc6#
- 2.Qd4#
- 1...Sf4
- 2.Qd4#
- 1...Sf6
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rg3#
- 2.Rh3#
- 2.Qd4#
- 1...f4
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rg3#
- 2.Rh3#
- 2.Qh7#
- 1...Bxd7!
- threat
- 1.Re3+?
- Keys
- 1.Qa7!
- threat
- 2.Qd4#
- 1...Bd5+
- 2.Rb3#
- 1...Be3
- 2.Qxe3#
- 1...f4
- 2.Qh7#
- 1...Rd8
- 2.Qe7#
- 1...Bg7
- 2.Qe3#
- 1...Sf3
- 2.Rd1#
- threat
- 1.Qa7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 5
- Sets
- R(j);N_GUARD::QAR2(D),XR(j)
- R(j);N_GUARD::QAR(D),XR(j)
- B(h);CHECK,N_GUARD::QAB1(D),XB(h)
- B(h);N_GUARD::QAB1(D)
- B(h);N_GUARD::QAR(D),XR(j)
- P(e);N_GUARD::QAR2(D)
- Tries
- Try
- R(C);CHECK
- Vars
- K(d);P-FLIGHT::B(E)
- Refutation
- K(d);P-FLIGHT,XR(C)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- B(h);CHECK,SBLOCK::B(A)+R(C)
- R(j);XB(E)::QAR1(D)
- R(j);N_GUARD::QAR1(D),XR(j)
- B(i);::QAB(D),XB(h)
- B(h);::QAR1(D)
- S(a);::QAB(D),XB(h)
- S(g);::QAR1(D)
- P(f);OGATEB::QAB(D)
- Refutation
- S(g);XQ(D)
- Try
- Q(D);
- Threat
- DUALS(7)
- Vars
- B(h);CHECK,N_GUARD::QAB1(D),XB(h)
- R(j);XB(E)::QAR1(D)
- R(j);::QAR1(D)
- B(i);::QAB(D),XB(h)
- S(a);::QAB(D),XB(h)
- S(g);::QAR1(D)
- Refutation
- B(h);XQ(D)
- Try
- Actual
- Q(D);
- Threat
- QAR1(D)
- Vars
- B(h);CHECK,SBLOCK::B(A)+R(C)
- B(i);N_GUARD::QAR1(D),XB(i)
- P(f);OGATEB::QAB(D)
- R(j);N_GUARD::QAR(D)
- B(i);N_GUARD::QAR1(D)
- S(a);SBLOCK::B(A)+R(C)
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).