MESON Chess Problem Database
Problem Display
PID: 72486 (8/5Q2/3p1n2/2p5/2Nkp1pp/pK2N1qb/rn1PPP2/1B6 w - - 0 1)
Drese, Gerardus Hendrikus
Tijdschrift vd NSB, 1931
#2
8 + 12
SOLUTION
- SOUND
- Sets
- 1...Qxf2
- 2.Sc2#
- 1...Qh2
- 2.Sc2#
- 2.Sf5#
- 1...Qf4
- 2.Sc2#
- 1...Qe5
- 2.Sc2#
- 1...Qg1
- 2.Sc2#
- 2.Sf5#
- 2.Qxf6#
- 1...Qg2
- 2.Sc2#
- 2.Sf5#
- 2.Qxf6#
- 1...Qxe3+
- 2.dxe3#
- 2.fxe3#
- 1...Sd3
- 2.Sf5#
- 1...Sd5
- 2.Qxd5#
- 1...Sh5
- 2.Qd5#
- 1...Sd7
- 2.Qd5#
- 1...Sh7
- 2.Qd5#
- 1...Se8
- 2.Qd5#
- 1...Sg8
- 2.Qd5#
- 1...Qxf2
- Tries
- 1.fxg3?
- threat
- 2.Sc2#
- 2.Sf5#
- 2.Qxf6#
- 1...Sd1
- 2.Sf5#
- 2.Qxf6#
- 1...Sd3
- 2.Sf5#
- 1...Sa4
- 2.Sf5#
- 2.Qxf6#
- 1...Sd5
- 2.Sc2#
- 2.Sf5#
- 2.Qxd5#
- 1...Sh5
- 2.Sc2#
- 2.Sf5#
- 2.Qd5#
- 1...Sd7
- 2.Sc2#
- 2.Sf5#
- 2.Qd5#
- 1...Sh7
- 2.Sc2#
- 2.Sf5#
- 2.Qd5#
- 1...Se8
- 2.Sc2#
- 2.Sf5#
- 2.Qd5#
- 1...Sg8
- 2.Sc2#
- 2.Sf5#
- 2.Qd5#
- 1...Sxc4!
- threat
- 1.fxg3?
- Keys
- 1.f4!
- threat
- 2.Qxf6#
- 1...Qxe3+
- 2.dxe3#
- 1...Qxf4
- 2.Sc2#
- 1...Sxc4
- 2.Qxc4#
- 1...exf4 ep
- 2.Sf5#
- 1...gxf4 ep
- 2.Sc2#
- 1...Sd3
- 2.Sf5#
- 1...Sd5
- 2.Qxd5#
- 1...Sh5
- 2.Qd5#
- 1...Sd7
- 2.Qd5#
- 1...Sh7
- 2.Qd5#
- 1...Se8
- 2.Qd5#
- 1...Sg8
- 2.Qd5#
- threat
- 1.f4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 2
- Sets
- Q(d);N_PINS(F),XP(D)::S(F)
- Q(d);N_PINS(F)::S(F)
- S(b);N_PINS(F)::S(F)
- S(l);N_GUARD::QAR1(H),XS(l)
- S(l);N_GUARD::QAR1(H)
- Tries
- Try
- P(D);N_SPINS(F),XQ(d)
- Threat
- DUALS(3)
- Vars
- S(b);::S(F)
- Refutation
- S(b);XS(G)
- Try
- Actual
- P(D);
- Threat
- QAB(H),XS(l)
- Vars
- Q(d);CHECK,OGATE,XS(F)::P(B),XQ(d)
- Q(d);N_PINS(F),XP(D)::S(F)
- S(b);OGATE,XS(G)::QAR1(H),XS(b)
- P(g);EP,N_PINS(F),XP(D)::S(F)
- P(h);EP,N_PINS(F),XP(D)::S(F)
- S(b);N_PINS(F)::S(F)
- S(l);N_GUARD::QAR1(H),XS(l)
- S(l);N_GUARD::QAR1(H)
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).