MESON Chess Problem Database
Problem Display
PID: 159706 (2RN1K2/5pp1/3N2Q1/5p1n/2Bk1B2/b4P2/prnPP3/qbr5 w - - 0 1)
Anonymous
BCPJ (June), 1919
#2
10 + 12
SOLUTION
- SOUND
- Sets
- 1...Rb4
- 2.Sxf5#
- 1...Bc5
- 2.Sc6#
- 1...Bxd6+
- 2.Qxd6#
- 1...Se1
- 2.Qg1#
- 2.e3#
- 1...Sb4
- 2.Sb5#
- 2.e3#
- 1...fxg6
- 2.Se6#
- 1...f6
- 2.Se6#
- 1...Rb4
- Tries
- 1.Kxf7?
- threat
- 2.Sxf5#
- 2.Se6#
- 1...Bxd6
- 2.Se6#
- 2.Qxd6#
- 1...Sxf4
- 2.Qxg7#
- 1...Rb5
- 2.Sxb5#
- 2.Se6#
- 1...Bc5
- 2.Sc6#
- 2.Se6#
- 1...Se1
- 2.Se6#
- 2.Qg1#
- 2.e3#
- 1...Se3
- 2.Se6#
- 1...Sb4
- 2.Sb5#
- 2.Se6#
- 2.e3#
- 1...Sg3
- 2.Se6#
- 2.Qxg7#
- 1...Rb7+!
- threat
- 1.Sxf7?
- threat
- 2.Be5#
- 1...Bxd6+
- 2.Qxd6#
- 1...Sxf4
- 2.Qxg7#
- 1...Rb5!
- threat
- 1.Be3+?
- 1...Ke5
- 2.Sc6#
- 2.Sxf7#
- 1...Sxe3!
- 1...Ke5
- 1.Qxf5?
- threat
- 2.Sc6#
- 2.Be5#
- 2.Qd3#
- 2.Qe4#
- 2.Qd5#
- 2.Qe5#
- 1...Sxf4
- 2.Sc6#
- 2.Qe4#
- 2.Qxf4#
- 1...Rb3
- 2.Sc6#
- 2.Be5#
- 2.Qe4#
- 2.Qd5#
- 2.Qe5#
- 1...Rb5
- 2.Sc6#
- 2.Qd3#
- 2.Qe4#
- 1...Rb6
- 2.Be5#
- 2.Qd3#
- 2.Qe4#
- 2.Qd5#
- 2.Qe5#
- 1...Se1
- 2.Sc6#
- 2.Be3#
- 2.Be5#
- 2.Qd5#
- 2.Qe5#
- 2.e3#
- 1...Se3
- 2.Sc6#
- 2.Bxe3#
- 2.Be5#
- 2.Qe5#
- 1...Sb4
- 2.Sb5#
- 2.Be3#
- 2.Be5#
- 2.Qc5#
- 2.Qe5#
- 2.e3#
- 1...Sg3
- 2.Sc6#
- 2.Be5#
- 2.Qd3#
- 2.Qd5#
- 2.Qe5#
- 1...Sf6
- 2.Sc6#
- 2.Be5#
- 2.Qd3#
- 2.Qe5#
- 1...f6
- 2.Sc6#
- 2.Se6#
- 2.Qd3#
- 2.Qe4#
- 2.Qd5#
- 1...Bxd6+!
- threat
- 1.Qxf7?
- threat
- 2.Se6#
- 2.Qd5#
- 1...Sxf4
- 2.Qxg7#
- 1...Rb5
- 2.Se6#
- 1...Se3
- 2.Se6#
- 1...Sb4
- 2.Sb5#
- 2.Se6#
- 2.Qa7#
- 2.e3#
- 1...Sf6
- 2.Se6#
- 1...Bxd6+!
- threat
- 1.Qg1+?
- 1...Se3
- 2.Qxe3#
- 1...Rxg1!
- 1...Se3
- 1.Qxg7+?
- 1...Sf6
- 2.Qxf6#
- 1...f6
- 2.Se6#
- 1...Sxg7!
- 1...Sf6
- 1.Kxf7?
- Keys
- 1.Bxf7!
- threat
- 2.Rc4#
- 1...Bxd6+
- 2.Qxd6#
- 1...Sxf4
- 2.Qxg7#
- 1...Rb4
- 2.Sxf5#
- 1...Bc5
- 2.Sc6#
- 1...Se1
- 2.Qg1#
- 1...Se3
- 2.dxe3#
- 1...Sb4
- 2.Sb5#
- threat
- 1.Bxf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- R(e);N_PINS(F)::S(F),XP(i)
- B(g);SBLOCK::S(I)
- B(g);CHECK,OGATE,XS(F)::QAR2(G),XB(g)
- P(k);N_GUARD,XQ(G)::S(I)
- P(k);N_GUARD::S(I)
- Tries
- Try
- K(J);N_SPINS(F),P-FLIGHT,XP(k)
- Threat
- DUALS(2)
- Vars
- S(j);N_GUARD,XB(E)::QAB(G),XP(l)
- S(f);::S(I)
- Refutation
- R(e);CHECK
- Try
- S(I);XP(k)
- Threat
- B(E)
- Vars
- B(g);CHECK,OGATE,XS(F)::QAR2(G),XB(g)
- S(j);N_GUARD,XB(E)::QAB(G),XP(l)
- Refutation
- R(e);
- Try
- B(E);CHECK
- Refutation
- S(f);XB(E)
- Try
- Q(G);XP(i)
- Threat
- DUALS(6)
- Refutation
- B(g);CHECK,XS(F)
- Try
- Q(G);XP(k)
- Threat
- DUALS(2)
- Vars
- S(j);N_GUARD,XB(E)::QAB(G),XP(l)
- R(e);::S(I)
- S(f);::S(I)
- S(j);::S(I)
- Refutation
- B(g);CHECK,XS(F)
- Try
- Q(G);CHECK
- Vars
- S(f);N_GUARD,P_SPINS(f)::QAB1(G),XS(f)
- Refutation
- R(c);XQ(G)
- Try
- Q(G);CHECK,XP(l)
- Vars
- S(j);N_GUARD,P_SPINS(j)::QAB(G),XS(j)
- P(k);P_SPINP(k)::S(I)
- Refutation
- S(j);XQ(G)
- Try
- Actual
- B(D);XP(k)
- Threat
- R1(H)
- Vars
- B(g);CHECK,OGATE,XS(F)::QAR2(G),XB(g)
- S(j);N_GUARD,XB(E)::QAB(G),XP(l)
- R(e);N_PINS(F)::S(F),XP(i)
- B(g);SBLOCK::S(I)
- S(f);N_GUARD,S_CUTR(c)::QAB(G)
- S(f);OGATE::P(A),XS(f)
- S(f);N_PINS(F)::S(F)
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).