MESON Chess Problem Database
Problem Display
PID: 162756 (1qBr4/2Qn4/6R1/7p/4N2p/5k1p/7B/b3R2K w - - 0 1)
Ernst, Manfred
Die Schwalbe, 2016
#2
7 + 8
SOLUTION
- SOUND
- Sets
- 1...Qa7
- 2.Qf4#
- 1...Qb1
- 2.Qf4#
- 1...Qb2
- 2.Qf4#
- 1...Qb3
- 2.Qf4#
- 1...Qb4
- 2.Qf4#
- 1...Qb5
- 2.Qf4#
- 1...Qb6
- 2.Qf4#
- 1...Qb7
- 2.Qf4#
- 1...Qa8
- 2.Qf4#
- 1...Qxc8
- 2.Qf4#
- 1...Bc3
- 2.Qxc3#
- 1...Se5
- 2.Rf6#
- 1...Qa7
- Tries
- 1.Rg2?
- threat
- 2.Sd2#
- 2.Sg5#
- 1...Qb2
- 2.Sg5#
- 2.Qf4#
- 1...Qb4
- 2.Sg5#
- 2.Qf4#
- 1...Qb5
- 2.Sd2#
- 2.Qf4#
- 1...Rg8
- 2.Sd2#
- 1...Bc3
- 2.Sg5#
- 2.Qxc3#
- 1...Bf6
- 2.Sd2#
- 1...Sc5
- 2.Sg5#
- 2.Rf2#
- 1...Se5
- 2.Sg5#
- 2.Rf2#
- 1...Sb6
- 2.Sg5#
- 2.Rf2#
- 1...Sf6
- 2.Sg5#
- 2.Rf2#
- 1...Sf8
- 2.Sg5#
- 2.Rf2#
- 1...hxg2+!
- threat
- 1.Qc1?
- threat
- 2.Re3#
- 2.Qe3#
- 2.Qd1#
- 1...Qg3
- 2.Qe3#
- 1...Qf4
- 2.Qxf4#
- 2.Qd1#
- 1...Qd6
- 2.Re3#
- 2.Qe3#
- 1...Qa7
- 2.Qf4#
- 2.Qd1#
- 1...Qb1
- 2.Re3#
- 2.Qe3#
- 2.Qf4#
- 1...Qb2
- 2.Re3#
- 2.Qe3#
- 2.Qf4#
- 1...Qb3
- 2.Qf4#
- 1...Qb5
- 2.Re3#
- 2.Qe3#
- 2.Qf4#
- 1...Qb6
- 2.Qf4#
- 2.Qd1#
- 1...Bd4
- 2.Qd1#
- 1...Sc5
- 2.Re3#
- 2.Qe3#
- 1...Se5
- 2.Re3#
- 2.Rf6#
- 2.Qe3#
- 2.Qf4#
- 1...Sb6
- 2.Re3#
- 2.Qe3#
- 1...Sf6
- 2.Re3#
- 2.Qe3#
- 1...Sf8
- 2.Re3#
- 2.Qe3#
- 1...Qxh2+!
- threat
- 1.Rg2?
- Keys
- 1.Bg3!
- threat
- 2.Sd2#
- 1...hxg3
- 2.Rxg3#
- 1...Qb2
- 2.Qf4#
- 1...Qb4
- 2.Qf4#
- 1...Bc3
- 2.Qxc3#
- 1...Sc5
- 2.Sg5#
- 1...Se5
- 2.Rf6#
- 1...Sb6
- 2.Sg5#
- 1...Sf6
- 2.Sg5#
- 1...Sf8
- 2.Sg5#
- threat
- 1.Bg3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 8
- Sets
- Q(g);N_GUARD::QAR1(F)
- Q(g);N_GUARD,P_PINR(A)::QAR1(F)
- Q(g);N_GUARD,XB(G)::QAR1(F)
- B(a);N_GUARD::QAR(F),XB(a)
- S(f);N_GUARD,S_CUTB(a)::R(E)
- Tries
- Try
- R(E);
- Threat
- DUALS(2)
- Vars
- R(h);::S(D)
- B(a);::S(D)
- Refutation
- P(c);CHECK,XR(E)
- Try
- Q(F);
- Threat
- DUALS(3)
- Vars
- Q(g);::QAR1(F)
- Q(g);N_GUARD::QAR1(F)
- B(a);::QAB(F)
- Refutation
- Q(g);CHECK,XB(C)
- Try
- Actual
- B(C);
- Threat
- S(D)
- Vars
- P(d);OGATE,XB(C)::R1(E),XP(d)
- Q(g);N_GUARD::QAR1(F)
- B(a);N_GUARD::QAR(F),XB(a)
- S(f);::S(D)
- S(f);N_GUARD,S_CUTB(a)::R(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).