MESON Chess Problem Database
Problem Display
PID: 152731 (1BQ5/8/4b3/8/rnq1k2K/2PpNR2/B7/5R2 w - - 0 1)
Groeneveld, Cornelis
L'Italia Scacchistica, 1985
#2
8 + 6
SOLUTION
- SOUND
- Sets
- 1...Bh3
- 2.Qxc4#
- 1...Bg4
- 2.Qxg4#
- 2.Qxc4#
- 1...Bd5
- 2.Qg4#
- 2.Qf5#
- 1...Bf5
- 2.Qxf5#
- 2.Qxc4#
- 1...Bd7
- 2.Qxc4#
- 1...Bf7
- 2.Qg4#
- 2.Qf5#
- 1...Bg8
- 2.Qg4#
- 2.Qf5#
- 1...Sd5
- 2.Qxe6#
- 1...Bh3
- Tries
- 1.Sxc4?
- threat
- 2.Sd2#
- 2.Qxe6#
- 1...Rxa2
- 2.Qxe6#
- 1...Bxc4
- 2.Qf5#
- 2.Qxc4#
- 1...Bxc8
- 2.Sd2#
- 1...Sxa2
- 2.Qxe6#
- 1...Ra5
- 2.Sd2#
- 1...Ra6
- 2.Sd2#
- 1...Bh3
- 2.Sd2#
- 1...Bg4
- 2.Sd2#
- 1...Bd5
- 2.Sd2#
- 2.Re3#
- 2.Rf4#
- 2.Qg4#
- 2.Qf5#
- 1...Bf5
- 2.Sd2#
- 2.Qxf5#
- 1...Bd7
- 2.Sd2#
- 1...Bf7
- 2.Sd2#
- 2.Qf5#
- 1...Bg8
- 2.Sd2#
- 2.Qf5#
- 1...Sc6
- 2.Sd2#
- 1...d2
- 2.Sxd2#
- 2.Qxe6#
- 1...Kd5!
- threat
- 1.Sd5?
- threat
- 2.Sf6#
- 2.Qxe6#
- 2.Qxc4#
- 1...Kxd5+
- 2.Qxc4#
- 1...Qxa2
- 2.Sf6#
- 2.Qxe6#
- 1...Qxc3
- 2.Rf4#
- 1...Qxc8
- 2.Sf6#
- 2.Re3#
- 2.Rf4#
- 1...Bxd5
- 2.Qg4#
- 2.Qf5#
- 1...Bxc8
- 2.Sf6#
- 1...Sxa2
- 2.Sf6#
- 2.Qxe6#
- 1...Sxd5
- 2.Qxe6#
- 1...Qb3
- 2.Sf6#
- 2.Qxe6#
- 1...Qb5
- 2.Sf6#
- 2.Re3#
- 2.Rf4#
- 2.Qxe6#
- 1...Qa6
- 2.Sf6#
- 2.Re3#
- 2.Rf4#
- 1...Qd4
- 2.Rf4#
- 1...Qc5
- 2.Sf6#
- 2.Rf4#
- 2.Qxe6#
- 1...Qc6
- 2.Sf6#
- 2.Re3#
- 2.Rf4#
- 1...Qc7
- 2.Re3#
- 1...Ra6
- 2.Sf6#
- 2.Qxc4#
- 1...Bh3
- 2.Sf6#
- 2.Qxc4#
- 1...Bg4
- 2.Sf6#
- 2.Qxc4#
- 1...Bf5
- 2.Sf6#
- 2.Qxf5#
- 2.Qxc4#
- 1...Bd7
- 2.Sf6#
- 2.Qxc4#
- 1...Bf7
- 2.Sf6#
- 2.Qf5#
- 2.Qxc4#
- 1...Bg8
- 2.Sf6#
- 2.Qf5#
- 2.Qxc4#
- 1...Sc2
- 2.Sf6#
- 2.Qxe6#
- 1...Sa6
- 2.Sf6#
- 2.Qxe6#
- 1...Sc6
- 2.Sf6#
- 1...Qxd5!
- threat
- 1.Sxc4?
- Keys
- 1.Sg4!
- threat
- 2.Sf6#
- 1...Kd5
- 2.Qxc4#
- 1...Qxc3
- 2.Rf4#
- 1...Bxg4
- 2.Qxc4#
- 1...Qd4
- 2.Rf4#
- 1...Qc7
- 2.Re3#
- 1...Sd5
- 2.Qxe6#
- threat
- 1.Sg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 2
- Sets
- B(f);N_GUARD::QAR2(H),XQ(d)
- S(c);S_CUTQ(d)::QAR2(H),XB(f)
- Tries
- Try
- S(D);XQ(d)
- Threat
- DUALS(2)
- Vars
- R(b);XB(B)::QAR2(H),XB(f)
- B(f);XQ(H)::S(D)
- S(c);XB(B)::QAR2(H),XB(f)
- R(b);::S(D)
- B(f);::S(D)
- S(c);::S(D)
- Refutation
- K(e);S_FLIGHT
- Try
- S(D);
- Threat
- DUALS(3)
- Vars
- K(e);CHECK,P_SPINQ(d),S_FLIGHT,XS(D)::QAB1(H),XQ(d)
- Q(d);XP(C)::R1(E)
- B(f);XQ(H)::S(D)
- S(c);XS(D)::QAR2(H),XB(f)
- Q(d);::R1(E)
- S(c);::S(D)
- Refutation
- Q(d);XS(D)
- Try
- Actual
- S(D);
- Threat
- S(D)
- Vars
- K(e);P_PINS(D),P_SPINQ(d),S_FLIGHT::QAB1(H),XQ(d)
- Q(d);XP(C)::R1(E)
- B(f);N_GUARD,XS(D)::QAR2(H),XQ(d)
- Q(d);::R1(E)
- S(c);S_CUTQ(d)::QAR2(H),XB(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).