MESON Chess Problem Database
Problem Display
PID: 198874 (8/8/N7/bQ6/p1pp4/2k4K/1NP3R1/q4B2 w - - 0 1)
Greenwood, William M
Brisbane Courier, 1921
#2
7 + 6
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Qxb2
- 2.Qxc4#
- 1...Qb1
- 2.Sxa4#
- 1...Qc1
- 2.Sxa4#
- 1...Qd1
- 2.Sxd1#
- 2.Sxa4#
- 1...Qe1
- 2.Sxa4#
- 1...Qxf1
- 2.Sxa4#
- 1...Qa2
- 2.Sd1#
- 1...Qa3
- 2.Sd1#
- 1...Bb4
- 2.Qxb4#
- 1...Bb6
- 2.Qb4#
- 1...Bc7
- 2.Qb4#
- 1...Bd8
- 2.Qb4#
- 1...a3
- 2.Sa4#
- 1...d3
- 2.Qe5#
- 1...Qxb2
- Tries
- 1.Kh2?
- 1...Qxb2
- 2.Qxc4#
- 1...Qxf1
- 2.Sxa4#
- 1...Bb4
- 2.Qxb4#
- 1...d3
- 2.Qe5#
- 1...Qb1
- 2.Sxa4#
- 1...Qc1
- 2.Sxa4#
- 1...Qd1
- 2.Sxd1#
- 2.Sxa4#
- 1...Qe1
- 2.Sxa4#
- 1...Qa2
- 2.Sd1#
- 1...Qa3
- 2.Sd1#
- 1...Bb6
- 2.Qb4#
- 1...Bd8
- 2.Qb4#
- 1...a3
- 2.Sa4#
- 1...Bc7+!
- 1...Qxb2
- 1.Rf2?
- 1...Qxb2
- 2.Qxc4#
- 1...Bb4
- 2.Qxb4#
- 1...d3
- 2.Qe5#
- 1...Qb1
- 2.Sxa4#
- 1...Qc1
- 2.Sxa4#
- 1...Qd1
- 2.Sxd1#
- 2.Sxa4#
- 1...Qe1
- 2.Sxa4#
- 1...Qa2
- 2.Sd1#
- 1...Qa3
- 2.Sd1#
- 1...Bb6
- 2.Qb4#
- 1...Bc7
- 2.Qb4#
- 1...Bd8
- 2.Qb4#
- 1...a3
- 2.Sa4#
- 1...Qxf1+!
- 1...Qxb2
- 1.Rh2?
- 1...Qxb2
- 2.Qxc4#
- 1...Bb4
- 2.Qxb4#
- 1...d3
- 2.Qe5#
- 1...Qb1
- 2.Sxa4#
- 1...Qc1
- 2.Sxa4#
- 1...Qd1
- 2.Sxd1#
- 2.Sxa4#
- 1...Qe1
- 2.Sxa4#
- 1...Qa2
- 2.Sd1#
- 1...Qa3
- 2.Sd1#
- 1...Bb6
- 2.Qb4#
- 1...Bc7
- 2.Qb4#
- 1...Bd8
- 2.Qb4#
- 1...a3
- 2.Sa4#
- 1...Qxf1+!
- 1...Qxb2
- 1.Qc5?
- 1...Qxb2
- 2.Qxc4#
- 1...Qxf1
- 2.Sxa4#
- 2.Qa3#
- 1...Bb4
- 2.Qxb4#
- 1...Qb1
- 2.Sxa4#
- 2.Qa3#
- 1...Qc1
- 2.Sxa4#
- 2.Qa3#
- 1...Qd1
- 2.Sxd1#
- 2.Sxa4#
- 2.Qa3#
- 1...Qe1
- 2.Sxa4#
- 2.Qa3#
- 1...Qa2
- 2.Sd1#
- 1...Qa3
- 2.Sd1#
- 2.Qxa3#
- 1...Bb6
- 2.Qb4#
- 1...Bc7
- 2.Qb4#
- 1...Bd8
- 2.Qb4#
- 1...a3
- 2.Sa4#
- 1...d3
- 2.Qe5#
- 1...Kxb2!
- 1...Qxb2
- 1.Kh2?
- Keys
- 1.Kg4!
- 1...Qd1+
- 2.Sxd1#
- 1...Qxb2
- 2.Qxc4#
- 1...Qxf1
- 2.Sxa4#
- 1...Bb4
- 2.Qxb4#
- 1...d3
- 2.Qe5#
- 1...Qb1
- 2.Sxa4#
- 1...Qc1
- 2.Sxa4#
- 1...Qe1
- 2.Sxa4#
- 1...Qa2
- 2.Sd1#
- 1...Qa3
- 2.Sd1#
- 1...Bb6
- 2.Qb4#
- 1...Bc7
- 2.Qb4#
- 1...Bd8
- 2.Qb4#
- 1...a3
- 2.Sa4#
- 1...Qd1+
- 1.Kg4!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(a);SBLOCK,XS(B)::QAR1(F),XP(d)
- Q(a);N_GUARD::S(B),XP(c)
- Q(a);N_GUARD,P_PINR(D),XB(A)::S(B),XP(c)
- Q(a);N_GUARD::S(B)
- B(f);N_GUARD::QAB1(F),XB(f)
- B(f);N_GUARD::QAB1(F)
- P(c);S_CUTQ(a)::S(B)
- P(e);OGATEB::QAB(F)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- Q(a);SBLOCK,XS(B)::QAR1(F),XP(d)
- Q(a);N_GUARD,XB(A)::S(B),XP(c)
- B(f);N_GUARD::QAB1(F),XB(f)
- P(e);OGATEB::QAB(F)
- Q(a);N_GUARD::S(B),XP(c)
- Q(a);N_GUARD::S(B)
- B(f);N_GUARD::QAB1(F)
- P(c);S_CUTQ(a)::S(B)
- Refutation
- B(f);CHECK
- Try
- R(D);
- Vars
- Q(a);SBLOCK,XS(B)::QAR1(F),XP(d)
- B(f);N_GUARD::QAB1(F),XB(f)
- P(e);OGATEB::QAB(F)
- Q(a);N_GUARD::S(B),XP(c)
- Q(a);N_GUARD::S(B)
- B(f);N_GUARD::QAB1(F)
- P(c);S_CUTQ(a)::S(B)
- Refutation
- Q(a);CHECK,XB(A)
- Try
- R(D);
- Vars
- Q(a);SBLOCK,XS(B)::QAR1(F),XP(d)
- B(f);N_GUARD::QAB1(F),XB(f)
- P(e);OGATEB::QAB(F)
- Q(a);N_GUARD::S(B),XP(c)
- Q(a);N_GUARD::S(B)
- B(f);N_GUARD::QAB1(F)
- P(c);S_CUTQ(a)::S(B)
- Refutation
- Q(a);CHECK,XB(A)
- Try
- Q(F);P_PINP(d)
- Vars
- Q(a);SBLOCK,XS(B)::QAR1(F),XP(d)
- B(f);N_GUARD::QAB1(F),XB(f)
- Q(a);N_GUARD::S(B)
- B(f);N_GUARD::QAB1(F)
- P(c);S_CUTQ(a)::S(B)
- P(e);OGATEB::QAB(F)
- Refutation
- K(b);N_SPINP(d),S_FLIGHT,XS(B)
- Try
- Actual
- K(E);S_FLIGHT
- Vars
- Q(a);CHECK,N_GUARD::S(B),XQ(a)
- Q(a);SBLOCK,XS(B)::QAR1(F),XP(d)
- Q(a);N_GUARD,XB(A)::S(B),XP(c)
- B(f);N_GUARD::QAB1(F),XB(f)
- P(e);OGATEB::QAB(F)
- Q(a);N_GUARD::S(B),XP(c)
- Q(a);N_GUARD::S(B)
- B(f);N_GUARD::QAB1(F)
- P(c);S_CUTQ(a)::S(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).