MESON Chess Problem Database
Problem Display
PID: 92034 (8/2r2pKB/5B2/6p1/1p3kp1/b5r1/2NN2P1/3Q4 w - - 0 1)
Sontag, Gustav Joachim
Deutsche Schachblatter, 1938
#2
7 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Tries
- 1.Qe2?
- threat
- 2.Be5#
- 2.Qe4#
- 2.Qe5#
- 1...Rxg2
- 2.Be5#
- 2.Qe3#
- 2.Qe5#
- 1...Rb3
- 2.Be5#
- 2.Qe5#
- 1...Rgc3
- 2.Be5#
- 2.Qe5#
- 1...Rd3
- 2.Be5#
- 2.Qe5#
- 1...Re3
- 2.Qxe3#
- 1...Rf3
- 2.Be5#
- 2.Qe5#
- 1...Rh3
- 2.Be5#
- 2.Qe5#
- 1...Rc4
- 2.Be5#
- 2.Qxc4#
- 2.Qe5#
- 1...Rc5
- 2.Qe4#
- 1...Bb2
- 2.Qe4#
- 1...Re7!
- threat
- 1.Qe1?
- threat
- 2.Be5#
- 2.Qe4#
- 2.Qe5#
- 1...Rxg2
- 2.Be5#
- 2.Qe3#
- 2.Qe5#
- 1...Rb3
- 2.Be5#
- 2.Qe5#
- 1...Rgc3
- 2.Be5#
- 2.Qe5#
- 1...Rd3
- 2.Be5#
- 2.Qe5#
- 1...Re3
- 2.Qxe3#
- 1...Rf3
- 2.Be5#
- 2.Qe5#
- 1...Rh3
- 2.Be5#
- 2.Qe5#
- 1...Rc4
- 2.Be5#
- 2.Qe5#
- 1...Rc5
- 2.Qe4#
- 1...Bb2
- 2.Qe4#
- 1...Re7!
- threat
- 1.Qe2?
- Keys
- 1.Sf3!
- threat
- 2.Be5#
- 2.Bxg5#
- 2.Qd2#
- 2.Qd4#
- 2.Qd6#
- 1...Rxg2
- 2.Be5#
- 1...Rxf3
- 2.Qd6#
- 1...Rxc2
- 2.Bxg5#
- 2.Qd4#
- 1...gxf3
- 2.Qd4#
- 1...Rh3
- 2.Be5#
- 2.Qd6#
- 1...Rc3
- 2.Be5#
- 2.Bxg5#
- 2.Qd4#
- 2.Qd6#
- 1...Rc4
- 2.Be5#
- 2.Bxg5#
- 2.Qd2#
- 2.Qd6#
- 1...Rc5
- 2.Qd2#
- 2.Qd4#
- 1...Rc6
- 2.Be5#
- 2.Bxg5#
- 2.Qd2#
- 2.Qd4#
- 1...Rd7
- 2.Be5#
- 2.Bxg5#
- 1...Re7
- 2.Bxg5#
- 1...Bc1
- 2.Be5#
- 2.Bxg5#
- 2.Qxc1#
- 2.Qd4#
- 2.Qd6#
- 1...Bb2
- 2.Qd2#
- 1...b3
- 2.Be5#
- 2.Bxg5#
- 2.Qd2#
- 2.Qd4#
- threat
- 1.Sf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- Tries
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- R(b);N_GUARD::QAB1(A),XR(b)
- R(g);::QAR1(A)
- B(a);P_PINB(E)::QAR1(A)
- Refutation
- R(g);
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- R(b);N_GUARD::QAB1(A),XR(b)
- R(g);::QAR1(A)
- B(a);P_PINB(E)::QAR1(A)
- Refutation
- R(g);
- Try
- Actual
- S(C);
- Threat
- DUALS(5)
- Vars
- R(b);XP(D)::B(E)
- R(b);XS(C)::QAB(A)
- P(e);XS(C)::QAR2(A)
- R(g);::B(E),XP(f)
- B(a);P_PINB(E)::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).