MESON Chess Problem Database
Problem Display
PID: 9743 (1B6/3P3K/k5BR/8/1P6/N6p/3p3Q/2q5 w - - 0 1)
Kohnlein, Friedrich
Deutsches Wochenschach, 1909
#2
8 + 4
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Be4#
- 1...Qd1
- 2.Be4#
- 1...Qe1
- 2.Be4#
- 1...Qh1
- 2.Be4#
- 1...Qb1
- Tries
- 1.Qd6+?
- 1...Qc6
- 2.Qxc6#
- 1...Kb7!
- 1...Qc6
- 1.Qc7?
- threat
- 2.Bc2#
- 2.Bd3#
- 2.Qa7#
- 2.b5#
- 1...Qxa3
- 2.Bd3#
- 2.Qc6#
- 1...d1Q
- 2.Bd3#
- 2.Qa7#
- 2.b5#
- 1...d1S
- 2.Bd3#
- 2.Qa7#
- 2.b5#
- 1...d1B
- 2.Bd3#
- 2.Qa7#
- 2.b5#
- 1...d1R
- 2.Bd3#
- 2.Qa7#
- 2.b5#
- 1...Qc6
- 2.Bd3#
- 2.Qxc6#
- 2.Qa7#
- 1...Qb2
- 2.Bd3#
- 2.Qc6#
- 2.Qa7#
- 1...Qa1
- 2.Bd3#
- 2.Qc6#
- 2.Qa7#
- 2.b5#
- 1...Qb1
- 2.Bxb1#
- 2.Bc2#
- 2.Bd3#
- 2.Be4#
- 2.Bf5#
- 2.Qc6#
- 2.Qa7#
- 1...Qe1
- 2.Bd3#
- 2.Be4#
- 2.Qc6#
- 2.Qa7#
- 2.b5#
- 1...Qf1
- 2.Bd3#
- 2.Bf5#
- 2.Qc6#
- 2.Qa7#
- 1...Qg1
- 2.Bd3#
- 2.b5#
- 1...Qh1
- 2.Bd3#
- 2.Be4#
- 2.Qa7#
- 2.b5#
- 1...Qc2
- 2.Bxc2#
- 2.Bd3#
- 2.Qa7#
- 2.b5#
- 1...Qc3
- 2.Bd3#
- 2.Qa7#
- 2.b5#
- 1...Qc4
- 2.Bd3#
- 2.Qa7#
- 1...Qc5
- 2.Bd3#
- 1...Qxc7!
- threat
- 1.Qe2+?
- 1...Kb6
- 2.Qb5#
- 1...Qc4
- 2.Be4#
- 1...Kb7!
- 1...Kb6
- 1.Qg2?
- threat
- 2.Bc2#
- 2.Bd3#
- 1...Kb6
- 2.Bc2#
- 1...Qxa3
- 2.Bd3#
- 2.Qc6#
- 1...Qc6
- 2.Qxc6#
- 1...d1Q
- 2.Bd3#
- 1...d1S
- 2.Bd3#
- 1...d1B
- 2.Bd3#
- 1...d1R
- 2.Bd3#
- 1...Qb2
- 2.Bd3#
- 2.Qc6#
- 1...Qa1
- 2.Bd3#
- 2.Qc6#
- 1...Qe1
- 2.Bd3#
- 2.Be4#
- 2.Qc6#
- 1...Qf1
- 2.Bd3#
- 2.Bf5#
- 2.Qc6#
- 1...Qg1
- 2.Bd3#
- 1...Qc2
- 2.Bxc2#
- 2.Bd3#
- 1...Qc3
- 2.Bd3#
- 1...Qc4
- 2.Bd3#
- 1...Qc5
- 2.Bd3#
- 1...Qc7
- 2.Bd3#
- 1...Qc8
- 2.Bd3#
- 1...hxg2!
- threat
- 1.Qd6+?
- Keys
- 1.Qh1!
- threat
- 2.Bc2#
- 2.Bd3#
- 1...Kb6
- 2.Bc2#
- 1...Qxa3
- 2.Bd3#
- 2.Qc6#
- 1...Qxh1
- 2.Be4#
- 1...Qc6
- 2.Qxc6#
- 1...d1Q
- 2.Bd3#
- 1...d1S
- 2.Bd3#
- 1...d1B
- 2.Bd3#
- 1...d1R
- 2.Bd3#
- 1...Qb2
- 2.Bd3#
- 2.Qc6#
- 1...Qa1
- 2.Bd3#
- 2.Qc6#
- 1...Qe1
- 2.Bd3#
- 2.Be4#
- 2.Qc6#
- 1...Qf1
- 2.Bd3#
- 2.Bf5#
- 2.Qc6#
- 1...Qg1
- 2.Bd3#
- 1...Qc2
- 2.Bxc2#
- 2.Bd3#
- 1...Qc3
- 2.Bd3#
- 1...Qc4
- 2.Bd3#
- 1...Qc5
- 2.Bd3#
- 1...Qc7
- 2.Bd3#
- 1...Qc8
- 2.Bd3#
- threat
- 1.Qh1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 12
- REMOVED MATES = 3
- Sets
- Q(a);N_GUARD,P_PINB(D)::R(E)+B(D)
- Q(a);N_GUARD::R(E)+B(D)
- Tries
- Try
- Q(A);CHECK
- Vars
- Q(a);N_GUARD,P_SPINQ(a)::QAR2(A),XQ(a)
- Refutation
- K(d);S_FLIGHT
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- Q(a);::R(E)+B(D),DCHECK
- Refutation
- Q(a);P_PINP(F),XQ(A)
- Try
- Q(A);CHECK
- Vars
- K(d);P-FLIGHT::QAR1(A)
- Q(a);P_SPINQ(a)::R(E)+B(D)
- Refutation
- K(d);S_FLIGHT
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- K(d);P-FLIGHT::R(E)+B(D)
- Q(a);N_GUARD::QAR2(A),XQ(a)
- P(b);::R(E)+B(D),DCHECK
- Q(a);::R(E)+B(D),DCHECK
- Q(a);::R(E)+B(D)
- Q(a);P_PINP(F)::R(E)+B(D),DCHECK
- Refutation
- P(c);XQ(A)
- Try
- Actual
- Q(A);
- Threat
- DUALS(2)
- Vars
- K(d);P-FLIGHT::R(E)+B(D)
- Q(a);N_GUARD,XQ(A)::R(E)+B(D)
- Q(a);N_GUARD::QAR2(A),XQ(a)
- P(b);::R(E)+B(D),DCHECK
- Q(a);::R(E)+B(D),DCHECK
- Q(a);::R(E)+B(D)
- Q(a);P_PINP(F)::R(E)+B(D),DCHECK
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).