MESON Chess Problem Database
Problem Display
PID: 216211 (4BK2/4PP2/4k3/1p4PP/1Pp2P2/2Nq2B1/3R4/Q7 w - - 0 1)
Dubbe, Friedrich
Sammlung Leichterer Schachaufgaben 2 (Dufresne), 1882
#2
12 + 4
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Kd6
- 2.f5#
- 1...Qb1
- 2.Bd7#
- 1...Qf1
- 2.Bd7#
- 1...Qc2
- 2.Bd7#
- 1...Qe2
- 2.Bd7#
- 1...Qe4
- 2.Bd7#
- 1...Qf5
- 2.Bd7#
- 2.Qa6#
- 1...Qg6
- 2.Bd7#
- 1...Qh7
- 2.Bd7#
- 1...Qxc3
- 2.Bd7#
- 1...Qe3
- 2.Bd7#
- 1...Qf3
- 2.Bd7#
- 1...Qxg3
- 2.Bd7#
- 1...Qd7
- 2.Bxd7#
- 1...Kd6
- Tries
- 1.Rxd3?
- threat
- 2.Bd7#
- 1...Kf5
- 2.Bd7#
- 1...cxd3!
- threat
- 1.Qe1+?
- 1...Kd6
- 2.Qe5#
- 2.f5#
- 1...Qe2
- 2.Bd7#
- 1...Qe4
- 2.Bd7#
- 2.Qxe4#
- 1...Qe3
- 2.Bd7#
- 1...Kf5!
- 1...Kd6
- 1.Qf1?
- 1...Kf5
- 2.Qh3#
- 1...Kd6
- 2.f5#
- 1...Qxf1
- 2.Bd7#
- 1...Qxd2
- 2.f5#
- 1...Qxc3
- 2.Bd7#
- 2.Qh3#
- 2.f5#
- 1...Qxg3
- 2.Bd7#
- 1...Qd4
- 2.f5#
- 1...Qb1
- 2.Bd7#
- 1...Qc2
- 2.Bd7#
- 1...Qe2
- 2.Bd7#
- 2.f5#
- 1...Qe4
- 2.Bd7#
- 1...Qf5
- 2.Bd7#
- 1...Qg6
- 2.Bd7#
- 1...Qh7
- 2.Bd7#
- 1...Qe3
- 2.Bd7#
- 2.Qh3#
- 2.f5#
- 1...Qf3
- 2.Bd7#
- 1...Qd6
- 2.Qh3#
- 2.f5#
- 1...Qd7
- 2.Bxd7#
- 2.Qh3#
- 2.f5#
- 1...Qd8
- 2.Qh3#
- 2.f5#
- 1...Qd5!
- 1...Kf5
- 1.f5+?
- 1...Qxf5
- 2.Bd7#
- 2.Rd6#
- 2.Qa6#
- 1...Kxf5!
- 1...Qxf5
- 1.Rxd3?
- Keys
- 1.Qb1!
- 1...Kf5
- 2.Bd7#
- 1...Kd6
- 2.f5#
- 1...Qxb1
- 2.Bd7#
- 1...Qxd2
- 2.Qg6#
- 2.f5#
- 1...Qxc3
- 2.Bd7#
- 2.f5#
- 1...Qxg3
- 2.Bd7#
- 2.Qe4#
- 2.Qg6#
- 1...Qd4
- 2.f5#
- 1...Qf1
- 2.Bd7#
- 2.Qe4#
- 2.Qg6#
- 1...Qc2
- 2.Bd7#
- 1...Qe2
- 2.Bd7#
- 2.Qg6#
- 2.f5#
- 1...Qe4
- 2.Bd7#
- 2.Qxe4#
- 1...Qf5
- 2.Bd7#
- 1...Qg6
- 2.Bd7#
- 2.Qxg6#
- 1...Qh7
- 2.Bd7#
- 1...Qe3
- 2.Bd7#
- 2.Qg6#
- 2.f5#
- 1...Qf3
- 2.Bd7#
- 2.Qg6#
- 1...Qd5
- 2.Qg6#
- 1...Qd6
- 2.Qg6#
- 2.f5#
- 1...Qd7
- 2.Bxd7#
- 2.Qe4#
- 2.Qg6#
- 2.f5#
- 1...Qd8
- 2.Qe4#
- 2.Qg6#
- 2.f5#
- 2.exd8S#
- 1...Kf5
- 1.Qb1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 9
- Sets
- K(d);P-FLIGHT,P_SPINQ(a)::B(D)+P(F)
- Q(a);N_GUARD::B(K)
- Q(a);N_GUARD,XS(C)::B(K)
- Q(a);N_GUARD,XB(D)::B(K)
- Q(a);N_GUARD::B(K),XQ(a)
- Tries
- Try
- R(B);XQ(a)
- Threat
- B(K)
- Vars
- K(d);S_FLIGHT::B(K)
- Refutation
- P(b);XR(B)
- Try
- Q(A);CHECK
- Vars
- Q(a);P_SPINQ(a)::B(K)
- Refutation
- K(d);S_FLIGHT
- Try
- Q(A);
- Vars
- K(d);S_FLIGHT::QAB(A)
- K(d);P-FLIGHT,P_SPINQ(a)::B(D)+P(F)
- Q(a);N_GUARD,XQ(A)::B(K)
- Q(a);N_GUARD,XR(B)::P(F)
- Q(a);N_GUARD,XB(D)::B(K)
- Q(a);N_GUARD::P(F)
- Q(a);N_GUARD::B(K)
- Q(a);N_GUARD,P_PINP(J),SBLOCK::B(K)
- Refutation
- Q(a);
- Try
- P(F);CHECK
- Refutation
- K(d);S_FLIGHT,XP(F)
- Try
- Actual
- Q(A);
- Vars
- K(d);P_SPINQ(a),S_FLIGHT::B(K)
- K(d);P-FLIGHT,P_SPINQ(a)::B(D)+P(F)
- Q(a);N_GUARD,XQ(A)::B(K)
- Q(a);N_GUARD::P(F)
- Q(a);N_GUARD::B(K)
- Q(a);N_GUARD,P_PINP(J)::B(K)
- Q(a);OGATE::QAR2(A)
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).