MESON Chess Problem Database
Problem Display
PID: 15990 (1B3N2/1p3Q2/1Knpb1N1/3kp3/3n3R/3P4/8/8 w - - 0 1)
Onkoud, Abdelaziz
Die Schwalbe, 2000
#2
7 + 7
| 45 | Schach | 2001 |
| 5454 | Near Snap | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Sc2
- 2.Qxe6#
- 1...Se2
- 2.Qxe6#
- 1...Sb3
- 2.Qxe6#
- 1...Sf3
- 2.Qxe6#
- 1...Sb5
- 2.Qxe6#
- 1...Sf5
- 2.Qxe6#
- 1...Sb4
- 2.Se7#
- 1...Sa5
- 2.Se7#
- 1...Sa7
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sxb8
- 2.Se7#
- 1...Sd8
- 2.Se7#
- 1...Sc2
- Tries
- 1.Sxe6?
- threat
- 2.Sxd4#
- 2.Sef4#
- 2.Sc7#
- 1...Sc2
- 2.Sd4#
- 2.Sc5#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sef8#
- 1...Se2
- 2.Sd4#
- 2.Sc5#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sef8#
- 1...Sb3
- 2.Sd4#
- 2.Sc5#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sef8#
- 1...Sf3
- 2.Sd4#
- 2.Sc5#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sef8#
- 1...Sb5
- 2.Sd4#
- 2.Sc5#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sef8#
- 1...Sf5
- 2.Sd4#
- 2.Sc5#
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Sd8#
- 2.Sef8#
- 1...Sd8
- 2.Sef4#
- 2.Sc7#
- 2.Se7#
- 1...e4
- 2.Sef4#
- 2.Sc7#
- 1...Sxe6!
- threat
- 1.Rxd4+?
- 1...Sxd4
- 2.Se7#
- 1...exd4
- 2.Qxe6#
- 2.Qf3#
- 1...Kxd4!
- 1...Sxd4
- 1.Re4?
- 1...Sxb8
- 2.Se7#
- 1...Sc2
- 2.Qxe6#
- 1...Se2
- 2.Qxe6#
- 1...Sb3
- 2.Qxe6#
- 1...Sf3
- 2.Qxe6#
- 1...Sb5
- 2.Qxe6#
- 1...Sf5
- 2.Qxe6#
- 1...Sb4
- 2.Se7#
- 1...Sa5
- 2.Se7#
- 1...Sa7
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sd8
- 2.Se7#
- 1...Bxf7!
- 1...Sxb8
- 1.Qf3+?
- 1...e4
- 2.Qxe4#
- 1...Sxf3!
- 1...e4
- 1.Qxb7?
- threat
- 2.Se7#
- 1...Sf5
- 2.Qxc6#
- 1...e4!
- threat
- 1.Qd7?
- threat
- 2.Qxd6#
- 1...Sxb8
- 2.Se7#
- 1...Sb5
- 2.Qxe6#
- 1...Sf5
- 2.Qxe6#
- 1...Bxd7!
- threat
- 1.Qe7?
- threat
- 2.Qxd6#
- 1...Sxe7
- 2.Sxe7#
- 1...Sb5
- 2.Qxe6#
- 1...Sf5
- 2.Qxe6#
- 1...Sxb8!
- threat
- 1.Sxe6?
- Keys
- 1.Qf6!
- 1...Sxb8
- 2.Se7#
- 1...e4
- 2.Sf4#
- 1...Bh3
- 2.Qxd6#
- 1...Bg4
- 2.Qxd6#
- 1...Bf5
- 2.Qxd6#
- 1...Bd7
- 2.Qxd6#
- 1...Bf7
- 2.Qxd6#
- 1...Bc8
- 2.Qxd6#
- 1...Bg8
- 2.Qxd6#
- 1...Sc2
- 2.Qxe6#
- 1...Se2
- 2.Qxe6#
- 1...Sb3
- 2.Qxe6#
- 1...Sf3
- 2.Qxe6#
- 1...Sb5
- 2.Qxe6#
- 1...Sf5
- 2.Qxe6#
- 1...Sb4
- 2.Se7#
- 1...Sa5
- 2.Se7#
- 1...Sa7
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Sd8
- 2.Se7#
- 1...Sxb8
- 1.Qf6!
This anticipates 156412(2006)
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::QAB1(E),XB(f)
- S(d);N_GUARD::S(D)
- S(d);N_GUARD::S(D),XS(d)
- S(d);N_GUARD,XB(F)::S(D)
- Tries
- Try
- S(G);XB(f)
- Threat
- DUALS(3)
- Refutation
- S(a);P_SPINS(a),XS(G)
- Try
- R(B);CHECK,XS(a)
- Vars
- S(d);SBLOCK,XR(B)::S(D)
- Refutation
- K(b);N_SPINB(f),P-FLIGHT,XR(B)
- Try
- R(B);
- Vars
- S(d);N_GUARD,XB(F)::S(D)
- S(a);N_GUARD::QAB1(E),XB(f)
- S(d);N_GUARD::S(D)
- S(d);N_GUARD::S(D),XS(d)
- Refutation
- B(f);N_SPINB(f),XQ(E)
- Try
- Q(E);CHECK,N_PINB(f)
- Vars
- P(c);P_SPINP(c)::QAB1(E),XP(c)
- Refutation
- S(a);XQ(E)
- Try
- Q(E);N_PINB(f),P_PINS(d),XP(g)
- Threat
- S(D)
- Vars
- S(a);N_GUARD::QAB1(E),XS(d)
- Refutation
- P(c);
- Try
- Q(E);N_PINB(f),P_PINP(e)
- Threat
- QAR1(E),XP(e)
- Vars
- S(d);N_GUARD,XB(F)::S(D)
- S(a);N_GUARD::QAB1(E),XB(f)
- Refutation
- B(f);N_SPINP(e),XQ(E)
- Try
- Q(E);N_PINB(f)
- Threat
- QAR1(E),XP(e)
- Vars
- S(d);XQ(E)::S(D),XS(d)
- S(a);N_GUARD::QAB1(E),XB(f)
- Refutation
- S(d);XB(F)
- Try
- Actual
- Q(E);N_PINB(f)
- Vars
- S(d);N_GUARD,XB(F)::S(D)
- P(c);N_GUARD::S(D)
- B(f);OGATE::QAR1(E),XP(e)
- S(a);N_GUARD::QAB1(E),XB(f)
- S(d);N_GUARD::S(D)
- S(d);N_GUARD::S(D),XS(d)
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).