MESON Chess Problem Database
Problem Display
PID: 180362 (7B/7n/K2P2R1/1N3k1P/Rp1P3P/2pb1BP1/1PQ2n2/8 w - - 0 1)
Lider, Valentin Viktorovich
Sinfonie Scacchistiche, 1977
#2
13 + 6
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Sd1
- 2.Qxd3#
- 1...Sh1
- 2.Qxd3#
- 1...Sh3
- 2.Qxd3#
- 1...Se4
- 2.Bg4#
- 1...Sg4
- 2.Qxd3#
- 1...Sg5
- 2.Rf6#
- 1...Sf6
- 2.Rxf6#
- 1...Sf8
- 2.Rf6#
- 1...cxb2
- 2.Qc5#
- 2.Qc8#
- 1...Sd1
- Tries
- 1.Bg4+?
- 1...Sxg4
- 2.Qxd3#
- 1...Ke4!
- 1...Sxg4
- 1.Bd5?
- threat
- 2.Qxf2#
- 1...Sg5
- 2.Rxg5#
- 1...Be4
- 2.Be6#
- 1...Sd1
- 2.Qxd3#
- 1...Sh1
- 2.Qxd3#
- 1...Sh3
- 2.Qxd3#
- 1...Se4
- 2.Be6#
- 1...Sg4
- 2.Qxd3#
- 1...Bxc2!
- threat
- 1.Ra5?
- 1...Bxc2
- 2.Sa3#
- 2.Sxc3#
- 2.Sa7#
- 2.Sc7#
- 1...cxb2
- 2.Qc5#
- 2.Qc8#
- 1...Sf6
- 2.Rxf6#
- 1...Be4
- 2.Sa3#
- 2.Sxc3#
- 2.Sa7#
- 2.Sc7#
- 1...Sd1
- 2.Qxd3#
- 1...Sh1
- 2.Qxd3#
- 1...Sh3
- 2.Qxd3#
- 1...Se4
- 2.Bg4#
- 1...Sg4
- 2.Qxd3#
- 1...Sg5
- 2.Rf6#
- 1...Sf8
- 2.Rf6#
- 1...b3!
- 1...Bxc2
- 1.Qxd3+?
- 1...Se4
- 2.Bxe4#
- 2.Bg4#
- 2.Qxe4#
- 1...Sxd3!
- 1...Se4
- 1.Qc1?
- threat
- 2.Qf4#
- 1...Sf6
- 2.Rxf6#
- 1...Sh3
- 2.g4#
- 1...Bxb5+!
- threat
- 1.d7?
- 1...Bxc2
- 2.Sd6#
- 1...cxb2
- 2.Qc5#
- 1...Sf6
- 2.Rxf6#
- 1...Be4
- 2.Sd6#
- 1...Sd1
- 2.Qxd3#
- 1...Sh1
- 2.Qxd3#
- 1...Sh3
- 2.Qxd3#
- 1...Se4
- 2.Bg4#
- 1...Sg4
- 2.Qxd3#
- 1...Sg5
- 2.Rf6#
- 1...Sf8
- 2.Rf6#
- 1...b3!
- 1...Bxc2
- 1.Bg4+?
- Keys
- 1.d5!
- 1...Bxc2
- 2.Sd4#
- 1...cxb2
- 2.Qc8#
- 1...Sf6
- 2.Rg5#
- 1...Be4
- 2.Sd4#
- 1...Sd1
- 2.Qxd3#
- 1...Sh1
- 2.Qxd3#
- 1...Sh3
- 2.Qxd3#
- 1...Se4
- 2.Bg4#
- 1...Sg4
- 2.Qxd3#
- 1...Sg5
- 2.Rxg5#
- 1...Sf8
- 2.Rg5#
- 1...b3
- 2.Rf4#
- 1...Bxc2
- 1.d5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 3
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::QAB(B),XB(c)
- S(a);N_GUARD,N_SPINB(c),SBLOCK::B(C)
- S(f);N_GUARD::R1(L)
- S(f);N_GUARD::R1(L),XS(f)
- Tries
- Try
- B(C);CHECK
- Vars
- S(a);XB(C)::QAB(B),XB(c)
- Refutation
- K(e);S_FLIGHT
- Try
- B(C);
- Threat
- QAR(B),XS(a)
- Vars
- S(f);N_GUARD::R1(L),XS(f)
- B(c);N_PINS(H)::B(C)
- S(a);N_GUARD::QAB(B),XB(c)
- S(a);N_SPINB(c),SBLOCK::B(C)
- Refutation
- B(c);N_PINS(H),N_SPINB(c),XQ(B)
- Try
- R(E);
- Vars
- S(f);N_GUARD::R1(L),XS(f)
- S(a);N_GUARD::QAB(B),XB(c)
- S(a);N_GUARD,N_SPINB(c),SBLOCK::B(C)
- S(f);N_GUARD::R1(L)
- Refutation
- P(d);
- Try
- Q(B);CHECK,N_SPINS(H),XB(c)
- Refutation
- S(a);XQ(B)
- Try
- Q(B);N_PINB(c)
- Threat
- QAR1(B)
- Vars
- S(f);N_GUARD::R1(L),XS(f)
- S(a);N_GUARD::P(D)
- Refutation
- B(c);CHECK,XS(H)
- Try
- P(K);
- Vars
- B(c);N_PINS(H),N_SPINB(c),XQ(B)::S(H)
- P(b);OGATE,XP(A)::QAR(B)
- S(f);N_GUARD::R1(L),XS(f)
- B(c);N_PINS(H)::S(H)
- S(a);N_GUARD::QAB(B),XB(c)
- S(a);N_GUARD,N_SPINB(c),SBLOCK::B(C)
- S(f);N_GUARD::R1(L)
- Refutation
- P(d);
- Try
- Actual
- P(F);
- Vars
- B(c);N_PINS(H),N_SPINB(c),XQ(B)::S(H)
- P(b);OGATE,XP(A)::QAB(B)
- S(f);N_GUARD::R1(L)
- B(c);N_PINS(H)::S(H)
- S(a);N_GUARD::QAB(B),XB(c)
- S(a);N_GUARD,N_SPINB(c),SBLOCK::B(C)
- S(f);N_GUARD::R1(L),XS(f)
- P(d);OGATE::R1(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).