MESON Chess Problem Database
Problem Display
PID: 16954 (2BB4/b1pN1ppr/rp6/PR3QP1/4p1Pk/8/4p2K/8 w - - 0 1)
Valve, Leo Erland
Schackvarlden, 1944
#2
9 + 10
SOLUTION
- SOUND
- Tries
- 1.Sc5?
- threat
- 2.Qxh7#
- 2.Qf2#
- 1...bxa5
- 2.Qf2#
- 1...bxc5
- 2.Qf2#
- 1...e1Q
- 2.Qxh7#
- 1...e1B
- 2.Qxh7#
- 1...Rh5
- 2.Qf2#
- 1...Rh6
- 2.Qf2#
- 1...Rh8
- 2.Qf2#
- 1...e3
- 2.Qxh7#
- 1...g6
- 2.Qf2#
- 1...f6!
- threat
- 1.Se5?
- threat
- 2.Qxh7#
- 2.Qf2#
- 1...e1Q
- 2.Qxh7#
- 1...e1B
- 2.Qxh7#
- 1...Rh5
- 2.Qf2#
- 1...Rh6
- 2.Qf2#
- 1...Rh8
- 2.Qf2#
- 1...e3
- 2.Sf3#
- 2.Qxh7#
- 1...f6
- 2.Sg6#
- 1...g6
- 2.Qf2#
- 1...bxa5!
- threat
- 1.Sf6?
- threat
- 2.Qxh7#
- 2.Qf2#
- 1...bxa5
- 2.Qxh7#
- 1...e1Q
- 2.Qxh7#
- 1...e1B
- 2.Qxh7#
- 1...Rh5
- 2.Qf2#
- 1...Rh6
- 2.Qf2#
- 1...Rh8
- 2.Qf2#
- 1...e3
- 2.Qxh7#
- 1...g6
- 2.Qf2#
- 1...c5!
- threat
- 1.Sb8?
- threat
- 2.Qxh7#
- 2.Qf2#
- 1...e1Q
- 2.Qxh7#
- 1...e1B
- 2.Qxh7#
- 1...Rh5
- 2.Qf2#
- 1...Rh6
- 2.Qf2#
- 1...Rh8
- 2.Qf2#
- 1...e3
- 2.Qxh7#
- 1...g6
- 2.Qf2#
- 1...bxa5!
- threat
- 1.Sf8?
- threat
- 2.Qxh7#
- 2.Qf2#
- 1...e1Q
- 2.Qxh7#
- 1...e1B
- 2.Qxh7#
- 1...Rh5
- 2.Qf2#
- 1...Rh6
- 2.Qf2#
- 1...Rh8
- 2.Qf2#
- 1...e3
- 2.Qxh7#
- 1...g6
- 2.Qf2#
- 1...bxa5!
- threat
- 1.Qf3?
- threat
- 2.Qg3#
- 2.Qh3#
- 1...e1Q
- 2.Qh3#
- 1...e1B
- 2.Qh3#
- 1...exf3!
- threat
- 1.Sc5?
- Keys
- 1.Sxb6!
- threat
- 2.Qxh7#
- 2.Qf2#
- 1...Rxb6
- 2.Qf2#
- 1...Bxb6
- 2.Qxh7#
- 1...e1Q
- 2.Qxh7#
- 1...e1B
- 2.Qxh7#
- 1...Rh5
- 2.Qf2#
- 1...Rh6
- 2.Qf2#
- 1...Rh8
- 2.Qf2#
- 1...e3
- 2.Qxh7#
- 1...g6
- 2.Qf2#
- threat
- 1.Sxb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- P(e);XP(C)::QAB(E)
- P(e);XS(G)::QAB(E)
- P(a);::QAR(E),XR(j)
- R(j);::QAB(E)
- P(b);::QAR(E),XR(j)
- P(i);::QAB(E)
- Refutation
- P(h);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- P(a);::QAR(E),XR(j)
- R(j);::QAB(E)
- P(h);N_GUARD::S(G)
- P(i);::QAB(E)
- Refutation
- P(e);XP(C)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- P(e);XP(C)::QAR(E),XR(j)
- P(a);::QAR(E),XR(j)
- R(j);::QAB(E)
- P(b);::QAR(E),XR(j)
- P(i);::QAB(E)
- Refutation
- P(g);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- P(a);::QAR(E),XR(j)
- R(j);::QAB(E)
- P(b);::QAR(E),XR(j)
- P(i);::QAB(E)
- Refutation
- P(e);XP(C)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- P(a);::QAR(E),XR(j)
- R(j);::QAB(E)
- P(b);::QAR(E),XR(j)
- P(i);::QAB(E)
- Refutation
- P(e);XP(C)
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- P(a);::QAR1(E)
- Refutation
- P(b);XQ(E)
- Try
- Actual
- S(G);XP(e)
- Threat
- DUALS(2)
- Vars
- R(d);XS(G)::QAB(E)
- B(f);XS(G)::QAR(E),XR(j)
- P(a);::QAR(E),XR(j)
- R(j);::QAB(E)
- P(b);::QAR(E),XR(j)
- P(i);::QAB(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).