MESON Chess Problem Database
Problem Display
PID: 202302 (nBK5/8/1pQ5/3P1Np1/3bkpP1/1p2P3/1pr2R2/1B2N3 w - - 0 1)
Ellerman, Arnoldo
8th HM., Il Secolo, 1923
#2
10 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bc5
- 2.Qe6#
- 1...Be5
- 2.d6#
- 1...fxe3
- 2.Sg3#
- 1...Bc5
- Tries
- 1.Sxc2?
- threat
- 2.Sa1#
- 2.Se1#
- 2.Sa3#
- 2.Sb4#
- 2.Scxd4#
- 1...Kd3
- 2.Sa1#
- 2.Se1#
- 2.Sa3#
- 2.Sb4#
- 2.Scxd4#
- 1...Bxe3
- 2.Sa1#
- 2.Se1#
- 2.Sa3#
- 2.Scxe3#
- 2.Sb4#
- 2.Scd4#
- 1...bxc2
- 2.Bxc2#
- 1...Bc3
- 2.Sa1#
- 2.Se1#
- 2.Sa3#
- 2.Sb4#
- 2.Scd4#
- 1...Bc5
- 2.Sa1#
- 2.Se1#
- 2.Sa3#
- 2.Sb4#
- 2.Scd4#
- 1...Be5
- 2.Sa1#
- 2.Se1#
- 2.Sa3#
- 2.Sb4#
- 2.Scd4#
- 1...Bf6
- 2.Sa1#
- 2.Se1#
- 2.Sa3#
- 2.Sb4#
- 2.Scd4#
- 1...Bg7
- 2.Sa1#
- 2.Se1#
- 2.Sa3#
- 2.Sb4#
- 2.Scd4#
- 1...Bh8
- 2.Sa1#
- 2.Se1#
- 2.Sa3#
- 2.Sb4#
- 2.Scd4#
- 1...Sc7!
- threat
- 1.Bxf4?
- threat
- 2.Sg3#
- 2.Sd6#
- 2.d6#
- 1...Bxe3
- 2.d6#
- 1...Bc5
- 2.Sg3#
- 2.Qe6#
- 2.d6#
- 1...Be5
- 2.Sg3#
- 2.d6#
- 1...Sc7
- 2.Sg3#
- 2.Sd6#
- 1...gxf4!
- threat
- 1.Rxc2?
- threat
- 2.Rc1#
- 2.Rxb2#
- 2.Rd2#
- 2.Re2#
- 2.Rf2#
- 2.Rg2#
- 2.Rh2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 1...bxc2
- 2.Bxc2#
- 1...Bc3
- 2.Rc1#
- 2.Rxb2#
- 2.Rd2#
- 2.Re2#
- 2.Rf2#
- 2.Rg2#
- 2.Rh2#
- 2.Rxc3#
- 1...Bc5
- 2.Rc1#
- 2.Rxb2#
- 2.Rd2#
- 2.Re2#
- 2.Rf2#
- 2.Rg2#
- 2.Rh2#
- 2.Rc3#
- 2.Rc4#
- 2.Rxc5#
- 2.Qe6#
- 1...Sc7!
- threat
- 1.exd4?
- threat
- 2.Re2#
- 2.d6#
- 1...Sc7
- 2.Re2#
- 1...f3!
- threat
- 1.Sxc2?
- Keys
- 1.Re2!
- threat
- 2.exd4#
- 1...Bxe3
- 2.Qc4#
- 1...fxe3
- 2.Sg3#
- 1...Bc3
- 2.exf4#
- 1...Bc5
- 2.Qe6#
- 1...Be5
- 2.d6#
- 1...Bf6
- 2.exf4#
- 1...Bg7
- 2.exf4#
- 1...Bh8
- 2.exf4#
- 1...f3
- 2.Sg3#
- threat
- 1.Re2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- B(d);N_PINQ(H)::QAR2(H)
- B(d);SBLOCK::QAB(H)+P(F)
- P(f);N_GUARD,SBLOCK,XP(D)::S(G)
- Tries
- Try
- S(B);N_SPINQ(H),XR(b)
- Threat
- DUALS(5)
- Vars
- P(c);OGATE,P_SPINP(c),XS(B)::B(A),XP(c)
- Refutation
- S(i);
- Try
- B(I);XP(f)
- Threat
- DUALS(3)
- Vars
- B(d);XP(D)::QAB(H)+P(F)
- Refutation
- P(g);XB(I)
- Try
- R(C);N_SPINQ(H),XR(b)
- Threat
- DUALS(10)
- Vars
- P(c);OGATE,P_SPINP(c),XR(C)::B(A),XP(c)
- Refutation
- S(i);
- Try
- P(D);XB(d)
- Threat
- DUALS(2)
- Vars
- S(i);N_PINQ(H)::R(C)
- Refutation
- P(f);
- Try
- Actual
- R(C);
- Threat
- R(C)+P(D),XB(d)
- Vars
- B(d);P_SPINB(d),XP(D)::QAR2(H)
- P(f);N_GUARD,P_SPINP(f),XP(D)::S(G)
- B(d);N_GUARD,N_PINQ(H)::R(C)+P(D),XP(f)
- B(d);N_PINQ(H)::QAR2(H)
- B(d);SBLOCK::QAB(H)+P(F)
- B(d);N_GUARD::R(C)+P(D),XP(f)
- P(f);N_GUARD::S(G)
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).