MESON Chess Problem Database
Problem Display
PID: 67391 (K6Q/8/2nN4/8/4PP2/R2pk1P1/2R1Pn1P/4B3 w - - 0 1)
Tinebra, Vincenzo
5th HM., US Problem Bulletin, 1995
#2
11 + 4
SOLUTION
- SOUND
- Sets
- 1...Sd1
- 2.Rxd3#
- 1...Sh1
- 2.Rxd3#
- 1...Sh3
- 2.Rxd3#
- 1...Sxe4
- 2.Sc4#
- 2.Sf5#
- 2.Rxd3#
- 1...Sg4
- 2.Rxd3#
- 1...Sd1
- Tries
- 1.Qb2?
- 1...Sxe4
- 2.Sc4#
- 2.Sf5#
- 2.Rxd3#
- 1...Sd1
- 2.Rxd3#
- 1...Sh1
- 2.Rxd3#
- 1...Sh3
- 2.Rxd3#
- 1...Sg4
- 2.Rxd3#
- 1...Sd4
- 2.Qc1#
- 1...Sa5
- 2.Qb6#
- 1...Se5
- 2.Qb6#
- 1...Sa7
- 2.Qb6#
- 1...Se7
- 2.Qb6#
- 1...Sb8
- 2.Qb6#
- 1...Sd8
- 2.Qb6#
- 1...Sb4!
- 1...Sxe4
- 1.Qd4+?
- 1...Kxd4
- 2.Bxf2#
- 1...Sxd4!
- 1...Kxd4
- 1.Qe5?
- threat
- 2.Sc4#
- 2.Sf5#
- 1...Sd4
- 2.Sc4#
- 1...Sa5
- 2.Sf5#
- 2.Qc5#
- 1...Se7
- 2.Sc4#
- 2.Qc5#
- 1...Sxe5!
- threat
- 1.Qh5?
- 1...Kd4
- 2.Bxf2#
- 2.Qc5#
- 1...Sxe4
- 2.Sf5#
- 2.Rxd3#
- 1...Sb4
- 2.Qc5#
- 1...Sd1
- 2.Rxd3#
- 1...Sh1
- 2.Rxd3#
- 1...Sh3
- 2.Rxd3#
- 1...Sg4
- 2.Rxd3#
- 1...Sd4
- 2.Bd2#
- 1...Sa5
- 2.Qc5#
- 1...Sa7
- 2.Qc5#
- 1...Se7
- 2.Qc5#
- 1...Sb8
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...Se5!
- 1...Kd4
- 1.Qh7?
- 1...Kd4
- 2.Bxf2#
- 1...Sxe4
- 2.Sf5#
- 2.Rxd3#
- 2.Qxe4#
- 1...Sb4
- 2.Qa7#
- 1...Sd1
- 2.Rxd3#
- 1...Sh1
- 2.Rxd3#
- 1...Sh3
- 2.Rxd3#
- 1...Sg4
- 2.Rxd3#
- 1...Sd4
- 2.Sc4#
- 1...Sa5
- 2.Qa7#
- 1...Se5
- 2.Qa7#
- 1...Sa7
- 2.Qxa7#
- 1...Sb8
- 2.Qa7#
- 1...Sd8
- 2.Qa7#
- 1...Se7!
- 1...Kd4
- 1.Qc8?
- 1...Kd4
- 2.Bxf2#
- 1...Sxe4
- 2.Sf5#
- 2.Rxd3#
- 1...Sb4
- 2.Qc5#
- 1...Sd1
- 2.Rxd3#
- 1...Sh1
- 2.Rxd3#
- 1...Sh3
- 2.Rxd3#
- 1...Sg4
- 2.Rxd3#
- 1...Sa5
- 2.Qc5#
- 1...Se5
- 2.Qc5#
- 1...Sa7
- 2.Qc5#
- 1...Se7
- 2.Qc5#
- 1...Sb8
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...Sd4!
- 1...Kd4
- 1.Qb2?
- Keys
- 1.Qc3!
- 1...Sxe4
- 2.Sc4#
- 2.Sf5#
- 2.Qxd3#
- 1...Sb4
- 2.Qc5#
- 1...Sd1
- 2.Qxd3#
- 1...Sh1
- 2.Qxd3#
- 1...Sh3
- 2.Qxd3#
- 1...Sg4
- 2.Qxd3#
- 1...Sd4
- 2.Qd2#
- 1...Sa5
- 2.Qc5#
- 1...Se5
- 2.Qc5#
- 1...Sa7
- 2.Qc5#
- 1...Se7
- 2.Qc5#
- 1...Sb8
- 2.Qc5#
- 1...Sd8
- 2.Qc5#
- 1...Sxe4
- 1.Qc3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 8
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::R1(E),XP(b)
- Tries
- Try
- Q(K);
- Vars
- S(a);N_GUARD::R1(E),XP(b)
- S(d);SBLOCK::QAB(K)
- S(d);N_GUARD::QAB(K)
- Refutation
- S(d);
- Try
- Q(K);CHECK
- Vars
- K(c);N_SPINP(b),S_FLIGHT,XQ(K)::B(A),XS(a)
- Refutation
- S(d);XQ(K)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- S(d);::S(I)
- Refutation
- S(d);XQ(K)
- Try
- Q(K);
- Vars
- S(d);N_GUARD::QAB(K)
- S(a);N_GUARD::R1(E),XP(b)
- S(d);SBLOCK::B(A)
- Refutation
- S(d);
- Try
- Q(K);
- Vars
- K(c);N_SPINP(b),S_FLIGHT::B(A),XS(a)
- S(d);N_GUARD::QAB(K)
- S(a);N_GUARD::R1(E),XP(b)
- S(d);SBLOCK::S(I)
- S(d);N_GUARD::QAB(K),XS(d)
- Refutation
- S(d);
- Try
- Q(K);
- Vars
- K(c);N_SPINP(b),S_FLIGHT::B(A),XS(a)
- S(d);OGATE::QAB(K)
- S(a);N_GUARD::R1(E),XP(b)
- Refutation
- S(d);
- Try
- Actual
- Q(K);
- Vars
- S(d);N_GUARD::QAB(K)
- S(a);N_GUARD::QAR1(K),XP(b)
- S(d);SBLOCK::QAB1(K)
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).