MESON Chess Problem Database
Problem Display
PID: 100993 (8/2b3N1/r5Q1/1b2k3/8/1B2B3/p4r2/K3R3 w - - 0 1)
Heftman, Hyman
Good Companions, 1921
#2
6 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra3
- 2.Qe6#
- 1...Ra4
- 2.Qe6#
- 1...Ra5
- 2.Qe6#
- 1...Re6
- 2.Qxe6#
- 1...Ra7
- 2.Qe6#
- 1...Ra8
- 2.Qe6#
- 1...Bc6
- 2.Qe6#
- 1...Bb6
- 2.Qe6#
- 1...Bd6
- 2.Qe6#
- 1...Ra3
- Tries
- 1.Bxf2+?
- 1...Kf4
- 2.Qf5#
- 2.Qg3#
- 1...Be2!
- 1...Kf4
- 1.Qe4+?
- 1...Kd6
- 2.Qe6#
- 1...Kf6
- 2.Sh5#
- 1...Kxe4!
- 1...Kd6
- 1.Qf5+?
- 1...Kd6
- 2.Qe6#
- 1...Rxf5!
- 1...Kd6
- 1.Qg3+?
- 1...Kf6
- 2.Qg5#
- 1...Rf4
- 2.Qxf4#
- 1...Ke4!
- 1...Kf6
- 1.Bxf2+?
- Keys
- 1.Qg4!
- threat
- 2.Qd4#
- 1...Kd6
- 2.Qe6#
- 1...Kf6
- 2.Qg5#
- 1...Rf4
- 2.Qxf4#
- 1...Rd2
- 2.Qf4#
- 1...Ra4
- 2.Qe6#
- 1...Rd6
- 2.Bd4#
- 1...Bb6
- 2.Qe6#
- threat
- 1.Qg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 7
- Sets
- R(e);N_GUARD::QAR1(E)
- R(e);N_GUARD::QAR1(E),XR(e)
- B(c);S_CUTR(e)::QAR1(E)
- B(f);S_CUTR(e)::QAR1(E)
- Tries
- Try
- B(D);CHECK,XR(b)
- Refutation
- B(c);P_SPINB(c)
- Try
- Q(E);CHECK
- Vars
- K(d);OGATE,S_FLIGHT::QAR1(E)
- K(d);S_FLIGHT::S(F)
- Refutation
- K(d);P-FLIGHT,XQ(E)
- Try
- Q(E);CHECK
- Vars
- K(d);S_FLIGHT::QAR1(E)
- Refutation
- R(b);XQ(E)
- Try
- Q(E);CHECK
- Vars
- K(d);S_FLIGHT::QAB1(E)
- R(b);N_GUARD,P_SPINR(b)::QAB1(E),XR(b)
- Refutation
- K(d);P-FLIGHT
- Try
- Actual
- Q(E);
- Threat
- QAB1(E)
- Vars
- K(d);S_FLIGHT::QAR1(E)
- K(d);S_FLIGHT::QAB1(E)
- R(b);N_GUARD::QAB1(E),XR(b)
- R(b);N_GUARD::QAB1(E)
- R(e);N_GUARD::QAR1(E)
- R(e);SBLOCK::R(B)+B(D),DCHECK
- B(f);S_CUTR(e)::QAR1(E)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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