MESON Chess Problem Database
Problem Display
PID: 78915 (K7/8/P5R1/k7/r1n5/p1PB2n1/2N5/1Q6 w - - 0 1)
Lange, Hans Franz
1st Comm., Die Schwalbe, 1940
#2
7 + 5
SOLUTION
- SOUND
- Sets
- 1...Rb4
- 2.Qxb4#
- 1...Sd2
- 2.Qb5#
- 2.Qb6#
- 1...Se3
- 2.Qb5#
- 2.Qb6#
- 1...Se5
- 2.Qb5#
- 2.Qb6#
- 1...Sb6+
- 2.Qxb6#
- 1...Rb4
- Tries
- 1.Bxc4?
- threat
- 2.Qb5#
- 2.Qb6#
- 1...Rb4
- 2.Qxb4#
- 1...Rxc4!
- threat
- 1.Rg5+?
- 1...Kxa6
- 2.Qb5#
- 2.Qb7#
- 1...Se5
- 2.Rxe5#
- 2.Qb5#
- 1...Sf5!
- 1...Kxa6
- 1.Qb7?
- threat
- 2.Qd5#
- 1...Sb6+
- 2.Qxb6#
- 1...Rb4
- 2.Qxb4#
- 1...Se3
- 2.Qb5#
- 2.Qb6#
- 2.Qc7#
- 1...Sd6
- 2.Qc7#
- 1...Se4!
- threat
- 1.Bxc4?
- Keys
- 1.Sd4!
- threat
- 2.Qb5#
- 1...Sb6+
- 2.Qxb6#
- 1...Rb4
- 2.Qxb4#
- 1...Sb2
- 2.Sb3#
- 1...Sd6
- 2.Sc6#
- threat
- 1.Sd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(c);N_GUARD::QAB1(A),XR(c)
- S(d);CHECK,N_GUARD::QAB1(A),XS(d)
- Tries
- Try
- B(D);XS(d)
- Threat
- DUALS(2)
- Vars
- R(c);N_GUARD::QAB1(A),XR(c)
- Refutation
- R(c);XB(D)
- Try
- R(F);CHECK
- Refutation
- S(b);P_SPINS(b)
- Try
- Q(A);
- Threat
- QAR(A)
- Vars
- S(d);CHECK,N_GUARD::QAB1(A),XS(d)
- R(c);N_GUARD::QAB1(A),XR(c)
- S(d);N_GUARD::QAB(A)
- Refutation
- S(b);
- Try
- Actual
- S(B);
- Threat
- QAR1(A)
- Vars
- S(d);CHECK,N_GUARD::QAB1(A),XS(d)
- R(c);N_GUARD::QAB1(A),XR(c)
- S(d);::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).