MESON Chess Problem Database
Problem Display
PID: 11442 (7B/7Q/5r2/3n2n1/4pp1N/4kNP1/R2b4/1B3K2 w - - 0 1)
Spitzenberger, Egon
Volkischer Beobachter, 1938
#2
8 + 7
SOLUTION
- SOUND
- Sets
- 1...Rf5
- 2.Bd4#
- 1...Ra6
- 2.Bd4#
- 1...Rb6
- 2.Bd4#
- 1...Rc6
- 2.Bd4#
- 1...Rd6
- 2.Bd4#
- 1...Re6
- 2.Bd4#
- 1...Rg6
- 2.Bd4#
- 1...Rh6
- 2.Bd4#
- 1...Rf7
- 2.Bd4#
- 1...Rf8
- 2.Bd4#
- 1...Bc1
- 2.Re2#
- 1...Be1
- 2.Re2#
- 1...Bc3
- 2.Re2#
- 1...Bb4
- 2.Re2#
- 1...Ba5
- 2.Re2#
- 1...Sxf3
- 2.Qxe4#
- 1...Sh3
- 2.Qxe4#
- 1...Se6
- 2.Qxe4#
- 1...Sf7
- 2.Qxe4#
- 1...exf3
- 2.Qd3#
- 1...Rf5
- Tries
- 1.Sf5+?
- 1...Kxf3
- 2.Qh5#
- 1...Rxf5!
- 1...Kxf3
- 1.Bxf6?
- threat
- 2.Bd4#
- 1...Sxf6
- 2.Qa7#
- 1...Sxf3
- 2.Sg2#
- 2.Sf5#
- 2.Qxe4#
- 1...exf3
- 2.Sf5#
- 2.Qd3#
- 1...Bc3
- 2.Re2#
- 1...Se6
- 2.Qxe4#
- 1...fxg3!
- threat
- 1.Qa7+?
- 1...Rb6
- 2.Bd4#
- 1...Sb6!
- 1...Rb6
- 1.Sf5+?
- Keys
- 1.Qf5!
- 1...Rxf5
- 2.Bd4#
- 1...Sxf3
- 2.Qxe4#
- 1...exf3
- 2.Qd3#
- 1...fxg3
- 2.Sg2#
- 1...Ra6
- 2.Bd4#
- 1...Rb6
- 2.Bd4#
- 1...Rc6
- 2.Bd4#
- 1...Rd6
- 2.Bd4#
- 1...Re6
- 2.Bd4#
- 1...Rg6
- 2.Bd4#
- 1...Rh6
- 2.Bd4#
- 1...Rf7
- 2.Bd4#
- 1...Rf8
- 2.Bd4#
- 1...Bc1
- 2.Re2#
- 1...Be1
- 2.Re2#
- 1...Bc3
- 2.Re2#
- 1...Bb4
- 2.Re2#
- 1...Ba5
- 2.Re2#
- 1...Sc3
- 2.Qc5#
- 1...Sb4
- 2.Qc5#
- 1...Sb6
- 2.Qc5#
- 1...Sc7
- 2.Qc5#
- 1...Se7
- 2.Qc5#
- 1...Sh3
- 2.Qxe4#
- 1...Se6
- 2.Qxe4#
- 1...Sf7
- 2.Qxe4#
- 1...Sh7
- 2.Qxe4#
- 1...Rxf5
- 1.Qf5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- R(g);OGATE::B(H)
- B(a);OGATE::R1(C)
- S(f);N_GUARD,XS(D)::QAR1(G),XP(c)
- S(f);N_GUARD::QAR1(G),XP(c)
- P(c);OGATE,XS(D)::QAR1(G)
- Tries
- Try
- S(F);CHECK
- Vars
- K(b);P-FLIGHT,XS(D)::QAB(G)
- Refutation
- R(g);XS(F)
- Try
- B(H);XR(g)
- Threat
- B(H)
- Vars
- S(e);N_GUARD,XB(H)::QAB(G)
- B(a);OGATE::R1(C)
- S(f);N_GUARD::QAR1(G),XP(c)
- Refutation
- P(d);XP(E)
- Try
- Q(G);CHECK
- Vars
- R(g);OGATE,P_SPINR(g)::B(H)
- Refutation
- S(e);P_SPINS(e)
- Try
- Actual
- Q(G);
- Vars
- R(g);OGATE,XQ(G)::B(H)
- S(f);N_GUARD,XS(D)::QAR1(G),XP(c)
- P(c);OGATE,XS(D)::QAR1(G)
- P(d);XP(E)::S(F)
- R(g);OGATE::B(H)
- B(a);OGATE::R1(C)
- S(e);OGATE::QAB(G)
- S(f);N_GUARD::QAR1(G),XP(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).