MESON Chess Problem Database
Problem Display
PID: 101205 (8/p2R3B/4pk2/6r1/6pP/8/4QN2/4K3 w - - 0 1)
Rothstein, Louis
Good Companions (April), 1919
#2
6 + 5
| 6490 | yacpdb | 2009 |
| 14868 | Pirnie Collection | 2012 |
SOLUTION
- SOUND
- Sets
- 1...Ra5
- 2.Sxg4#
- 1...Rb5
- 2.Sxg4#
- 1...Rc5
- 2.Sxg4#
- 1...Rd5
- 2.Sxg4#
- 1...Re5
- 2.Sxg4#
- 1...Rf5
- 2.Sxg4#
- 1...Rh5
- 2.Sxg4#
- 1...e5
- 2.Qa6#
- 1...Ra5
- Tries
- 1.Qf3+?
- 1...Ke5
- 2.Sd3#
- 1...Rf5
- 2.Sxg4#
- 1...gxf3!
- 1...Ke5
- 1.Qxg4?
- threat
- 2.Qxg5#
- 1...Ke5
- 2.Qd4#
- 2.Qxg5#
- 1...Rxg4
- 2.Sxg4#
- 1...Ra5
- 2.Qg7#
- 1...Rb5
- 2.Qg7#
- 1...Rc5
- 2.Qg7#
- 1...Rd5
- 2.Qg7#
- 1...Rf5
- 2.Qg7#
- 1...Rh5
- 2.Qg7#
- 1...Rg6
- 2.Qf4#
- 1...Rg7
- 2.Qf4#
- 2.Qxg7#
- 1...Rg8
- 2.Qf4#
- 1...e5
- 2.Se4#
- 2.hxg5#
- 1...Re5+!
- threat
- 1.Qb5?
- threat
- 2.Se4#
- 2.Qxg5#
- 2.hxg5#
- 1...Rxb5
- 2.Sxg4#
- 1...Rc5
- 2.Sxg4#
- 1...Rd5
- 2.Sxg4#
- 1...e5
- 2.Qa6#
- 2.Qc6#
- 1...Rf5
- 2.Se4#
- 2.Sxg4#
- 1...Rh5
- 2.Se4#
- 2.Sxg4#
- 1...Rg6
- 2.Se4#
- 1...Rg7
- 2.Se4#
- 1...Rg8
- 2.Se4#
- 1...Re5+!
- threat
- 1.Qb2+?
- 1...Re5+
- 2.Se4#
- 1...e5!
- 1...Re5+
- 1.Qd2?
- threat
- 2.Qxg5#
- 1...Ke5
- 2.Qxg5#
- 2.Qd4#
- 1...Rg6
- 2.Qf4#
- 1...Ra5
- 2.Sxg4#
- 1...Rb5
- 2.Sxg4#
- 1...Rc5
- 2.Sxg4#
- 1...Rd5
- 2.Sxg4#
- 1...Rf5
- 2.Sxg4#
- 1...Rh5
- 2.Sxg4#
- 1...Rg7
- 2.Qf4#
- 1...Rg8
- 2.Qf4#
- 1...e5
- 2.Qd6#
- 1...Re5+!
- threat
- 1.Qe3?
- threat
- 2.Qxg5#
- 2.hxg5#
- 1...Rg6
- 2.Qf4#
- 1...Ra5
- 2.Sxg4#
- 1...Rb5
- 2.Sxg4#
- 1...Rc5
- 2.Sxg4#
- 1...Rd5
- 2.Sxg4#
- 1...Re5
- 2.Sxg4#
- 1...Rf5
- 2.Sxg4#
- 1...Rh5
- 2.Sxg4#
- 1...Rg7
- 2.Qf4#
- 1...Rg8
- 2.Qf4#
- 1...e5!
- threat
- 1.Qf3+?
- Keys
- 1.Qf1!
- threat
- 2.Sxg4#
- 1...Re5+
- 2.Se4#
- 1...Ke5
- 2.Sd3#
- 1...g3
- 2.Sg4#
- 1...e5
- 2.Qa6#
- threat
- 1.Qf1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- R(b);N_GUARD::S(C),XP(a)
- R(b);N_GUARD,P_PINQ(B)::S(C),XP(a)
- P(c);OGATEB,SBLOCK::QAR(B)
- Tries
- Try
- Q(B);CHECK
- Vars
- K(d);S_FLIGHT::S(C)
- R(b);P_SPINR(b)::S(C),XP(a)
- Refutation
- P(a);XQ(B)
- Try
- Q(B);XP(a)
- Threat
- QAB1(B),XR(b)
- Vars
- R(b);XQ(B)::S(C),XR(b)
- R(b);OGATE::QAB1(B)
- R(b);N_GUARD::QAR2(B)
- Refutation
- R(b);CHECK
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- R(b);N_GUARD,XQ(B)::S(C),XP(a)
- R(b);N_GUARD::S(C),XP(a)
- R(b);::S(C)
- Refutation
- R(b);CHECK
- Try
- Q(B);CHECK
- Vars
- R(b);CHECK,P_SPINR(b)::S(C)
- Refutation
- P(c);P_SPINP(c)
- Try
- Q(B);
- Threat
- QAB1(B),XR(b)
- Vars
- R(b);N_GUARD::QAR2(B)
- R(b);N_GUARD::S(C),XP(a)
- P(c);OGATEB::QAR2(B)
- Refutation
- R(b);CHECK
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- R(b);N_GUARD::QAR2(B)
- R(b);N_GUARD::S(C),XP(a)
- R(b);N_GUARD,P_PINQ(B)::S(C),XP(a)
- Refutation
- P(c);
- Try
- Actual
- Q(B);
- Threat
- QAR(B)+S(C),DCHECK,XP(a)
- Vars
- R(b);CHECK,SBLOCK::QAR(B)+S(C),DCHECK
- K(d);S_FLIGHT::S(C)
- P(a);::QAR(B)+S(C),DCHECK
- P(c);OGATEB,SBLOCK::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).