MESON Chess Problem Database
Problem Display
PID: 193729 (8/Q7/8/8/8/1b2K3/8/4k3 w - - 0 1)
Massmann, Wilhelm Karl Heinrich
Deutsche Schachblatter, 1916
#2
2 + 2
| 5454 | Near Snap | 2019 |
| 3713 | Snap | 2019 |
| 6490 | yacpdb | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Bc4
- 2.Qa1#
- 1...Bd5
- 2.Qa1#
- 1...Be6
- 2.Qa1#
- 1...Bf7
- 2.Qa1#
- 1...Bg8
- 2.Qa1#
- 1...Bc4
- Tries
- 1.Qa5+?
- 1...Kd1
- 2.Qd2#
- 1...Kf1!
- 1...Kd1
- 1.Qb7?
- threat
- 2.Qh1#
- 1...Kf1
- 2.Qh1#
- 1...Bc4
- 2.Qb1#
- 1...Bd5
- 2.Qb1#
- 1...Kd1!
- threat
- 1.Qa8?
- threat
- 2.Qh1#
- 1...Kf1
- 2.Qh1#
- 1...Bc4
- 2.Qa1#
- 1...Bd5
- 2.Qa1#
- 1...Kd1!
- threat
- 1.Qa5+?
- Keys
- 1.Qh7!
- threat
- 2.Qh1#
- 1...Kd1
- 2.Qb1#
- 1...Kf1
- 2.Qh1#
- 1...Bc4
- 2.Qb1#
- 1...Bd5
- 2.Qb1#
- threat
- 1.Qh7!
Anticipated by 47227(1849), 110515(1870), 183106(1907)
This anticipates 166257(1917), 149134(1929), 172254(1996), 173962(2005), 169981(2017)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- B(b);N_GUARD::QAR(B)
- Tries
- Try
- Q(B);CHECK
- Vars
- K(a);P-FLIGHT::QAR1(B)
- Refutation
- K(a);P-FLIGHT
- Try
- Q(B);
- Threat
- QAR(B)
- Vars
- K(a);P-FLIGHT::QAR2(B)
- B(b);OGATE::QAR(B)
- Refutation
- K(a);P-FLIGHT
- Try
- Q(B);
- Threat
- QAR(B)
- Vars
- K(a);P-FLIGHT::QAR2(B)
- B(b);N_GUARD::QAR(B)
- Refutation
- K(a);P-FLIGHT
- Try
- Actual
- Q(B);
- Threat
- QAR(B)
- Vars
- K(a);P-FLIGHT::QAR2(B)
- B(b);N_GUARD::QAR(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).