MESON Chess Problem Database
Problem Display
PID: 21989 (b7/7K/8/1pB2R2/2k2r1b/pq2P3/P2Q4/3N4 w - - 0 1)
Bonner Feast, Frederick
Birmingham Post, 1923
#2
7 + 7
| 3360 | Simple Two-move Themes | 1924 |
SOLUTION
- SOUND
- Sets
- 1...Qxa2
- 2.Qc3#
- 1...Qc2
- 2.Qxc2#
- 1...Qa4
- 2.Qc3#
- 2.Qe2#
- 1...Qb1
- 2.Qc3#
- 1...Qc3
- 2.Qxc3#
- 1...Qd3
- 2.Qb4#
- 1...Qxe3
- 2.Sxe3#
- 1...Qb4
- 2.Qe2#
- 1...Rf1
- 2.Qd4#
- 1...Rf2
- 2.Qd4#
- 1...Rf3
- 2.Qd4#
- 1...Rd4
- 2.Qxd4#
- 1...Rxf5
- 2.Qd4#
- 1...Be4
- 2.Qd4#
- 1...Bd5
- 2.Qxd5#
- 1...Qxa2
- Tries
- 1.Be7?
- threat
- 2.Rc5#
- 1...Qxa2
- 2.Qc3#
- 1...Qxe3
- 2.Sxe3#
- 1...Rxf5
- 2.Qd4#
- 1...Qc2
- 2.Qxc2#
- 1...Qb1
- 2.Qc3#
- 1...Qc3
- 2.Qxc3#
- 1...Qd3
- 2.Qb4#
- 1...Qb4
- 2.Qe2#
- 1...Be4
- 2.Qd4#
- 1...Bd5
- 2.Qxd5#
- 1...Bxe7!
- threat
- 1.Bf8?
- threat
- 2.Rc5#
- 1...Qxa2
- 2.Qc3#
- 1...Qxe3
- 2.Sxe3#
- 1...Rxf5
- 2.Qd4#
- 1...Qc2
- 2.Qxc2#
- 1...Qb1
- 2.Qc3#
- 1...Qc3
- 2.Qxc3#
- 1...Qd3
- 2.Qb4#
- 1...Qb4
- 2.Qe2#
- 1...Be4
- 2.Qd4#
- 1...Bd5
- 2.Qxd5#
- 1...Be7!
- threat
- 1.Qc1+?
- 1...Qc2
- 2.Qxc2#
- 1...Qc3
- 2.Qxc3#
- 1...Kd3!
- 1...Qc2
- 1.Qc2+?
- 1...Qc3
- 2.Qxc3#
- 1...Qxc2!
- 1...Qc3
- 1.Be7?
- Keys
- 1.Bd6!
- threat
- 2.Rc5#
- 1...Qxa2
- 2.Qc3#
- 1...Qxe3
- 2.Sxe3#
- 1...Rxf5
- 2.Qd4#
- 1...Qc2
- 2.Qxc2#
- 1...Qb1
- 2.Qc3#
- 1...Qc3
- 2.Qxc3#
- 1...Qd3
- 2.Qb4#
- 1...Qb4
- 2.Qe2#
- 1...Be4
- 2.Qd4#
- 1...Bd5
- 2.Qxd5#
- threat
- 1.Bd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- Q(b);N_GUARD,XP(B)::QAR1(C)
- Q(b);N_GUARD,P_PINR(F)::QAR2(C),XQ(b)
- Q(b);N_GUARD,P_PINR(F)::QAR1(C)
- Q(b);N_GUARD::QAR1(C),XQ(b)
- Q(b);N_GUARD,P_PINR(F),SBLOCK::QAR1(C)
- Q(b);XP(D)::S(A),XQ(b)
- Q(b);N_GUARD::QAB(C)
- R(d);N_GUARD::QAR1(C)
- R(d);N_GUARD::QAR1(C),XR(d)
- R(d);N_GUARD,XR(F)::QAR1(C)
- B(g);P_PINR(F),S_CUTR(d)::QAR1(C)
- B(g);N_GUARD::QAB1(C),XB(g)
- Tries
- Try
- B(E);
- Threat
- R1(F)
- Vars
- Q(b);N_GUARD,XP(B)::QAR1(C)
- Q(b);XP(D)::S(A),XQ(b)
- R(d);N_GUARD,XR(F)::QAR1(C)
- Q(b);N_GUARD,P_PINR(F)::QAR2(C),XQ(b)
- Q(b);N_GUARD,P_PINR(F)::QAR1(C)
- Q(b);N_GUARD::QAR1(C),XQ(b)
- Q(b);N_GUARD,P_PINR(F),SBLOCK::QAR1(C)
- Q(b);N_GUARD::QAB(C)
- B(g);P_PINR(F),S_CUTR(d)::QAR1(C)
- B(g);N_GUARD::QAB1(C),XB(g)
- Refutation
- B(e);XB(E)
- Try
- B(E);
- Threat
- R1(F)
- Vars
- Q(b);N_GUARD,XP(B)::QAR1(C)
- Q(b);XP(D)::S(A),XQ(b)
- R(d);N_GUARD,XR(F)::QAR1(C)
- Q(b);N_GUARD,P_PINR(F)::QAR2(C),XQ(b)
- Q(b);N_GUARD,P_PINR(F)::QAR1(C)
- Q(b);N_GUARD::QAR1(C),XQ(b)
- Q(b);N_GUARD,P_PINR(F),SBLOCK::QAR1(C)
- Q(b);N_GUARD::QAB(C)
- B(g);P_PINR(F),S_CUTR(d)::QAR1(C)
- B(g);N_GUARD::QAB1(C),XB(g)
- Refutation
- B(e);
- Try
- Q(C);CHECK
- Vars
- Q(b);N_GUARD,P_PINR(F),P_SPINQ(b)::QAR2(C),XQ(b)
- Q(b);N_GUARD,P_SPINQ(b)::QAR1(C),XQ(b)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(C);CHECK
- Vars
- Q(b);N_GUARD,P_SPINQ(b)::QAR1(C),XQ(b)
- Refutation
- Q(b);P_PINR(F),XQ(C)
- Try
- Actual
- B(E);
- Threat
- R1(F)
- Vars
- Q(b);N_GUARD,XP(B)::QAR1(C)
- Q(b);XP(D)::S(A),XQ(b)
- R(d);N_GUARD,XR(F)::QAR1(C)
- Q(b);N_GUARD,P_PINR(F)::QAR2(C),XQ(b)
- Q(b);N_GUARD,P_PINR(F)::QAR1(C)
- Q(b);N_GUARD::QAR1(C),XQ(b)
- Q(b);N_GUARD,P_PINR(F),SBLOCK::QAR1(C)
- Q(b);N_GUARD::QAB(C)
- B(g);P_PINR(F),S_CUTR(d)::QAR1(C)
- B(g);N_GUARD::QAB1(C),XB(g)
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).