MESON Chess Problem Database
Problem Display
PID: 18204 (4Q3/8/8/8/8/2p2R1K/8/q6k w - - 0 1)
Speckmann, Werner
Die Schwalbe, 1954
#2
3 + 3
| 5454 | Near Snap | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Rf1#
- 2.Qe1#
- 1...Qe1
- 2.Qxe1#
- 1...Qf1+
- 2.Rxf1#
- 1...Qa2
- 2.Rf1#
- 2.Qe1#
- 1...Qa3
- 2.Rf1#
- 2.Qe1#
- 1...Qa4
- 2.Rf1#
- 2.Qe1#
- 1...Qa5
- 2.Rf1#
- 2.Qe1#
- 1...Qa8
- 2.Rf1#
- 2.Qe1#
- 1...Qb2
- Tries
- 1.Qc6?
- threat
- 2.Rf1#
- 2.Rg3#
- 1...Qf1+
- 2.Rxf1#
- 1...Qb1
- 2.Rf1#
- 1...Qb2
- 2.Rf1#
- 1...Qd1
- 2.Rf1#
- 1...Qe1
- 2.Rf1#
- 1...Qg1
- 2.Rf1#
- 1...Qa2
- 2.Rf1#
- 1...Qa4
- 2.Rf1#
- 1...Qa5
- 2.Rf1#
- 1...Qa6
- 2.Rf1#
- 1...Qa8
- 2.Rf1#
- 1...Kg1!
- threat
- 1.Qg6?
- threat
- 2.Qg2#
- 1...Qf1+
- 2.Rxf1#
- 1...Qb2
- 2.Rf1#
- 1...Qa2
- 2.Rf1#
- 1...Qg1!
- threat
- 1.Qe2?
- threat
- 2.Qg2#
- 2.Qh2#
- 1...Qf1+
- 2.Rxf1#
- 2.Qxf1#
- 1...Kg1
- 2.Qg2#
- 2.Qh2#
- 1...Qb2
- 2.Rf1#
- 2.Qd1#
- 2.Qf1#
- 2.Qe1#
- 1...Qa2
- 2.Rf1#
- 2.Qd1#
- 2.Qf1#
- 2.Qe1#
- 1...Qg1!
- threat
- 1.Qe4?
- threat
- 2.Rf1#
- 2.Rg3#
- 1...Qf1+
- 2.Rxf1#
- 1...Qb1
- 2.Rf1#
- 2.Qxb1#
- 1...Qb2
- 2.Rf1#
- 2.Qe1#
- 1...Qd1
- 2.Rf1#
- 1...Qe1
- 2.Rf1#
- 2.Qxe1#
- 1...Qg1
- 2.Rf1#
- 1...Qa2
- 2.Rf1#
- 2.Qe1#
- 1...Qa4
- 2.Rf1#
- 2.Qe1#
- 1...Qa8
- 2.Rf1#
- 2.Qb1#
- 2.Qe1#
- 1...Kg1!
- threat
- 1.Qe5?
- threat
- 2.Qh2#
- 1...Qf1+
- 2.Rxf1#
- 1...Kg1
- 2.Qh2#
- 1...Qb2
- 2.Rf1#
- 2.Qe1#
- 1...Qa2
- 2.Rf1#
- 2.Qe1#
- 1...Qg1!
- threat
- 1.Qb8?
- threat
- 2.Qh2#
- 1...Qf1+
- 2.Rxf1#
- 1...Kg1
- 2.Qh2#
- 1...Qb2
- 2.Rf1#
- 1...Qa2
- 2.Rf1#
- 1...Qg1!
- threat
- 1.Qg8?
- threat
- 2.Qg2#
- 1...Qf1+
- 2.Rxf1#
- 1...Qb2
- 2.Rf1#
- 1...Qa2
- 2.Rf1#
- 1...Qg1!
- threat
- 1.Qc6?
- Keys
- 1.Qa8!
- threat
- 2.Rf1#
- 2.Qxa1#
- 1...Qf1+
- 2.Rxf1#
- 1...Kg1
- 2.Qxa1#
- 1...Qxa8
- 2.Rf1#
- 1...Qb1
- 2.Rf1#
- 1...Qb2
- 2.Rf1#
- 1...Qc1
- 2.Rf1#
- 2.Rg3#
- 1...Qd1
- 2.Rf1#
- 1...Qe1
- 2.Rf1#
- 1...Qg1
- 2.Rf1#
- 1...Qa2
- 2.Rf1#
- 1...Qa3
- 2.Rf1#
- 1...Qa4
- 2.Rf1#
- 1...Qa5
- 2.Rf1#
- 1...Qa6
- 2.Rf1#
- 1...Qa7
- 2.Rf1#
- 1...c2
- 2.Rf1#
- threat
- 1.Qa8!
Anticipated by 124427(0000)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 13
- REMOVED MATES = 0
- Sets
- Q(a);N_GUARD::QAR(C),XQ(a)
- Q(a);CHECK,N_GUARD::R(A),XQ(a)
- Tries
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK::QAB(C)+R(A),DCHECK,XQ(a)
- Q(a);::QAB(C)+R(A),DCHECK
- Q(a);::QAB(C)+R(A)
- Q(a);SBLOCK::QAB(C)+R(A),DCHECK
- Refutation
- K(b);P-FLIGHT
- Try
- Q(C);
- Threat
- QAB1(C)
- Vars
- Q(a);CHECK,N_GUARD::R(A),XQ(a)
- Q(a);N_GUARD::R(A)
- Q(a);N_GUARD,SBLOCK::R(A)
- Refutation
- Q(a);
- Try
- Q(C);
- Threat
- DUALS(2)
- Refutation
- Q(a);
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK::QAB(C)+R(A),DCHECK,XQ(a)
- Q(a);::QAB(C)+R(A),DCHECK
- Q(a);::QAB(C)+R(A)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(C);
- Threat
- QAR1(C)
- Vars
- Q(a);CHECK,N_GUARD::R(A),XQ(a)
- K(b);P-FLIGHT::QAB1(C)
- Refutation
- Q(a);
- Try
- Q(C);
- Threat
- QAR1(C)
- Vars
- Q(a);CHECK,N_GUARD::R(A),XQ(a)
- K(b);P-FLIGHT::QAB1(C)
- Q(a);N_GUARD::R(A)
- Q(a);N_GUARD,SBLOCK::R(A)
- Refutation
- Q(a);
- Try
- Q(C);
- Threat
- QAB1(C)
- Vars
- Q(a);CHECK,N_GUARD::R(A),XQ(a)
- Q(a);N_GUARD::R(A)
- Refutation
- Q(a);
- Try
- Actual
- Q(C);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK::QAB(C)+R(A),DCHECK,XQ(a)
- K(b);P-FLIGHT::QAR(C),XQ(a)
- Q(a);XQ(C)::R(A)
- Q(a);::QAB(C)+R(A),DCHECK
- Q(a);::QAB(C)+R(A)
- P(c);::QAB(C)+R(A),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).