MESON Chess Problem Database
Problem Display
PID: 16662 (2Q2B2/5n2/3q4/N4P2/2Pk4/P4R2/3N4/3K4 w - - 0 1)
Fenner, A Jack
Chess, 1942
#2
9 + 3
SOLUTION
- SOUND
- Sets
- 1...Qh2
- 2.Sc6#
- 2.Qc5#
- 1...Qxa3
- 2.Sc6#
- 1...Qg3
- 2.Sc6#
- 2.Qc5#
- 1...Qb4
- 2.Sc6#
- 1...Qf4
- 2.Sc6#
- 2.Qc5#
- 1...Qc5
- 2.Qxc5#
- 1...Qe5
- 2.Sab3#
- 2.Sc6#
- 1...Qb8
- 2.Sc6#
- 2.Qc5#
- 1...Qa6
- 2.Qc5#
- 1...Qc6
- 2.Sxc6#
- 1...Qe6
- 2.Qc5#
- 1...Qf6
- 2.Qc5#
- 1...Qg6
- 2.Qc5#
- 1...Qh6
- 2.Qc5#
- 1...Qd7
- 2.Qc5#
- 1...Qd8
- 2.Sc6#
- 2.Qc5#
- 1...Se5
- 2.Sab3#
- 1...Qh2
- Tries
- 1.Bxd6?
- threat
- 2.Sab3#
- 2.Sc6#
- 2.Qc5#
- 1...Se5
- 2.Sab3#
- 2.Bc5#
- 2.Qc5#
- 1...Sd8
- 2.Sab3#
- 2.Qc5#
- 1...Sxd6!
- threat
- 1.Bg7+?
- 1...Qe5
- 2.Sab3#
- 1...Se5
- 2.Sab3#
- 1...Qf6!
- 1...Qe5
- 1.Qe6?
- threat
- 2.Sdb3#
- 2.Sab3#
- 2.Qe3#
- 1...Kc5
- 2.Qe3#
- 1...Qxa3
- 2.Sc6#
- 2.Qd5#
- 2.Qe4#
- 1...Qb4
- 2.Sc6#
- 2.Qd5#
- 2.Qe3#
- 2.Qe4#
- 1...Qf4
- 2.Sdb3#
- 2.Sab3#
- 2.Sc6#
- 2.Qd5#
- 1...Qe5
- 2.Sab3#
- 2.Sc6#
- 1...Qe7
- 2.Sdb3#
- 2.Sab3#
- 2.Qd5#
- 1...Qb8
- 2.Sc6#
- 2.Qd5#
- 2.Qe3#
- 2.Qe4#
- 1...Qb6
- 2.Qd5#
- 2.Qe3#
- 2.Qe4#
- 1...Se5
- 2.Sab3#
- 2.Qxd6#
- 1...Qxe6!
- threat
- 1.Qc6?
- 1...Qxa3
- 2.Qe4#
- 2.Qd5#
- 1...Qxf8
- 2.Qd5#
- 1...Qxc6
- 2.Sxc6#
- 1...Qh2
- 2.Qe4#
- 2.Qd5#
- 2.Qc5#
- 1...Qg3
- 2.Qe4#
- 2.Qd5#
- 2.Qc5#
- 1...Qb4
- 2.Qe4#
- 2.Qd5#
- 1...Qf4
- 2.Qd5#
- 2.Qc5#
- 1...Qc5
- 2.Qe4#
- 2.Qxc5#
- 1...Qe5
- 2.Sdb3#
- 2.Sab3#
- 1...Qc7
- 2.Qe4#
- 2.Qd5#
- 1...Qe7
- 2.Qd5#
- 1...Qb8
- 2.Qe4#
- 2.Qd5#
- 2.Qc5#
- 1...Qd5
- 2.Qxd5#
- 1...Qe6
- 2.Qc5#
- 1...Qf6
- 2.Qe4#
- 2.Qd5#
- 2.Qc5#
- 1...Qg6
- 2.Qe4#
- 2.Qd5#
- 2.Qc5#
- 1...Qh6
- 2.Qe4#
- 2.Qd5#
- 2.Qc5#
- 1...Qd7
- 2.Qe4#
- 2.Qc5#
- 1...Qd8
- 2.Qe4#
- 2.Qc5#
- 1...Se5
- 2.Sdb3#
- 2.Sab3#
- 2.Qxd6#
- 1...Sg5
- 2.Qxd6#
- 1...Sh6
- 2.Qxd6#
- 1...Sd8
- 2.Qxd6#
- 1...Sh8
- 2.Qxd6#
- 1...Ke5!
- 1...Qxa3
- 1.Qc7?
- 1...Ke5
- 2.Bg7#
- 1...Qxa3
- 2.Sc6#
- 2.Qf4#
- 1...Qxf8
- 2.Sab3#
- 1...Qh2
- 2.Sab3#
- 2.Sc6#
- 2.Bc5#
- 2.Qc5#
- 1...Qg3
- 2.Sab3#
- 2.Sc6#
- 2.Bc5#
- 2.Qc5#
- 1...Qb4
- 2.Sc6#
- 2.Qf4#
- 1...Qf4
- 2.Sab3#
- 2.Sc6#
- 2.Bc5#
- 2.Qxf4#
- 2.Qc5#
- 1...Qc5
- 2.Sab3#
- 2.Bxc5#
- 2.Qf4#
- 2.Qxc5#
- 1...Qe5
- 2.Sab3#
- 2.Sc6#
- 1...Qe7
- 2.Sab3#
- 1...Qd5
- 2.Sab3#
- 1...Qa6
- 2.Sab3#
- 2.Bc5#
- 2.Qf4#
- 2.Qc5#
- 1...Qb6
- 2.Qf4#
- 1...Qc6
- 2.Sab3#
- 2.Sxc6#
- 1...Qe6
- 2.Sab3#
- 2.Bc5#
- 2.Qc5#
- 1...Qf6
- 2.Sab3#
- 2.Bc5#
- 2.Qf4#
- 2.Qc5#
- 1...Qg6
- 2.Sab3#
- 2.Bc5#
- 2.Qf4#
- 2.Qc5#
- 1...Qh6
- 2.Sab3#
- 2.Bc5#
- 2.Qc5#
- 1...Qd7
- 2.Sab3#
- 2.Bc5#
- 2.Qf4#
- 2.Qc5#
- 1...Qd8
- 2.Sab3#
- 2.Sc6#
- 2.Bc5#
- 2.Qf4#
- 2.Qc5#
- 1...Se5
- 2.Sab3#
- 2.Qxd6#
- 1...Sg5
- 2.Qxd6#
- 1...Sh6
- 2.Qxd6#
- 1...Sd8
- 2.Qxd6#
- 1...Sh8
- 2.Qxd6#
- 1...Qxc7!
- 1...Ke5
- 1.Bxd6?
- Keys
- 1.Qb8!
- 1...Kc5
- 2.Qa7#
- 1...Ke5
- 2.Bg7#
- 1...Qxa3
- 2.Sc6#
- 2.Qf4#
- 1...Qxb8
- 2.Sc6#
- 1...Qxf8
- 2.Sab3#
- 1...Qh2
- 2.Sab3#
- 2.Sc6#
- 2.Qb2#
- 1...Qg3
- 2.Sab3#
- 2.Sc6#
- 2.Qb2#
- 1...Qb4
- 2.Sc6#
- 2.Qf4#
- 1...Qf4
- 2.Sab3#
- 2.Sc6#
- 2.Qxf4#
- 2.Qb2#
- 1...Qc5
- 2.Sab3#
- 2.Qf4#
- 2.Qb2#
- 1...Qe5
- 2.Sab3#
- 2.Sc6#
- 2.Qb2#
- 1...Qc7
- 2.Qb2#
- 1...Qe7
- 2.Sab3#
- 1...Qd5
- 2.Sab3#
- 2.Qb2#
- 1...Qa6
- 2.Sab3#
- 2.Qf4#
- 2.Qb2#
- 1...Qb6
- 2.Qf4#
- 1...Qc6
- 2.Sab3#
- 2.Sxc6#
- 2.Qb2#
- 1...Qe6
- 2.Sab3#
- 2.Qb2#
- 1...Qf6
- 2.Sab3#
- 2.Qf4#
- 2.Qb2#
- 1...Qg6
- 2.Sab3#
- 2.Qf4#
- 2.Qb2#
- 1...Qh6
- 2.Sab3#
- 2.Qb2#
- 1...Qd7
- 2.Sab3#
- 2.Qf4#
- 2.Qb2#
- 1...Qd8
- 2.Sab3#
- 2.Sc6#
- 2.Qf4#
- 2.Qb2#
- 1...Se5
- 2.Sab3#
- 2.Qxd6#
- 1...Sg5
- 2.Qxd6#
- 1...Sh6
- 2.Qxd6#
- 1...Sd8
- 2.Qxd6#
- 1...Sh8
- 2.Qxd6#
- 1...Kc5
- 1.Qb8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 11
- REMOVED MATES = 11
- Sets
- Q(b);N_GUARD,XP(C)::S(F)
- Q(b);N_GUARD::S(F)
- Q(b);N_GUARD::QAB1(H),XQ(b)
- Q(b);N_GUARD::QAB1(H)
- Q(b);N_GUARD::S(F),XQ(b)
- S(c);SBLOCK::S(F)
- Tries
- Try
- B(I);XQ(b)
- Threat
- DUALS(3)
- Refutation
- S(c);XB(I)
- Try
- B(I);CHECK
- Vars
- Q(b);P_SPINQ(b)::S(F)
- S(c);P_SPINS(c)::S(F)
- Refutation
- Q(b);P_SPINQ(b)
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- K(a);P_PINS(B),P_SPINQ(b),S_FLIGHT::QAB(H)
- Refutation
- Q(b);XQ(H)
- Try
- Q(H);
- Vars
- Q(b);N_GUARD,XB(I)::QAR1(H)
- Q(b);XQ(H)::S(F),XQ(b)
- Q(b);N_GUARD::QAR1(H)
- Q(b);N_GUARD::QAR1(H),XQ(b)
- Q(b);N_GUARD::QAB1(H)
- S(c);N_GUARD::QAR2(H),XQ(b)
- Refutation
- K(a);P_PINS(B),S_FLIGHT
- Try
- Q(H);
- Vars
- K(a);P_PINS(B),P_SPINQ(b),S_FLIGHT::B(I)
- Q(b);XB(I)::S(F)
- Q(b);::S(F)
- Q(b);OGATE::QAR2(H)
- S(c);N_GUARD::QAR2(H),XQ(b)
- Refutation
- Q(b);XQ(H)
- Try
- Actual
- Q(H);
- Vars
- K(a);P_PINS(B),P_SPINQ(b),S_FLIGHT::QAB(H)
- K(a);P_PINS(B),P_SPINQ(b),S_FLIGHT::B(I)
- Q(b);N_GUARD,XQ(H)::S(F)
- Q(b);XB(I)::S(F)
- Q(b);::QAB(H)
- Q(b);::S(F)
- Q(b);OGATE::QAR2(H)
- S(c);N_GUARD::QAR2(H),XQ(b)
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).