MESON Chess Problem Database
Problem Display
PID: 66147 (2b5/4p3/4B1N1/R2Rpq2/1K2k3/1pp5/1N1Pp1P1/7Q w - - 0 1)
Rosner, Eugene David
2nd Comm., US Problem Bulletin, 1992
#2
9 + 8
| 145 | StrateGems | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Qh3
- 2.gxh3#
- 1...Qxe6
- 2.g4#
- 1...Qxg6
- 2.g3#
- 1...Qf3
- 2.gxf3#
- 1...Qg5
- 2.g3#
- 2.g4#
- 1...e1Q
- 2.Qxe1#
- 1...e1S
- 2.Qxe1#
- 1...e1B
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...cxb2
- 2.Qb1#
- 1...Qh3
- Tries
- 1.Kxc3?
- threat
- 2.Ra4#
- 2.Qb1#
- 1...Qh3+
- 2.gxh3#
- 1...Qf3+
- 2.gxf3#
- 1...Qxe6
- 2.Qb1#
- 2.g4#
- 1...Qxg6
- 2.Ra4#
- 2.g3#
- 1...Bxe6
- 2.Qb1#
- 1...e1Q
- 2.Ra4#
- 2.Qxe1#
- 1...e1S
- 2.Ra4#
- 2.Qxe1#
- 1...e1B
- 2.Ra4#
- 2.Qxe1#
- 1...e1R
- 2.Ra4#
- 2.Qxe1#
- 1...Qf1
- 2.Ra4#
- 2.Rxe5#
- 1...Qf2
- 2.Rxe5#
- 2.Qb1#
- 1...Bd7
- 2.Qb1#
- 1...Ba6!
- threat
- 1.Sa4?
- threat
- 2.Sxc3#
- 2.Sc5#
- 1...Qxe6
- 2.g4#
- 1...Qxg6
- 2.g3#
- 1...Bxe6
- 2.Sxc3#
- 1...Qh3
- 2.Sc5#
- 2.gxh3#
- 1...Qf2
- 2.Sxc3#
- 1...Qf3
- 2.Sc5#
- 2.gxf3#
- 1...c2
- 2.Sc3#
- 2.Sc5#
- 1...cxd2!
- threat
- 1.Bxf5+?
- 1...Bxf5
- 2.g3#
- 2.g4#
- 1...Kxf5!
- 1...Bxf5
- 1.Rxe5+?
- 1...Kd4
- 2.Rad5#
- 2.dxc3#
- 1...Qxe5!
- 1...Kd4
- 1.Qh3?
- threat
- 2.Qxf5#
- 2.Qd3#
- 2.Qe3#
- 2.d3#
- 1...Qxe6
- 2.Qd3#
- 2.Qf3#
- 2.d3#
- 1...Qxg6
- 2.Qe3#
- 2.Qf3#
- 1...Bxe6
- 2.Qd3#
- 2.Qe3#
- 2.d3#
- 1...cxd2
- 2.Qd3#
- 1...e1Q
- 2.Qxf5#
- 2.Qd3#
- 2.d3#
- 1...e1S
- 2.Qxf5#
- 2.Qe3#
- 1...e1R
- 2.Qxf5#
- 2.Qd3#
- 2.d3#
- 1...Qg4
- 2.Qxg4#
- 2.Qd3#
- 2.Qe3#
- 2.d3#
- 1...Qf1
- 2.Qd3#
- 2.Qe3#
- 2.d3#
- 1...Qf2
- 2.Qd3#
- 2.d3#
- 1...Qf3
- 2.Qxf3#
- 2.gxf3#
- 1...Qf4
- 2.Qd3#
- 2.d3#
- 1...Qg5
- 2.Qd3#
- 2.Qf3#
- 2.d3#
- 1...Qh5
- 2.Qd3#
- 2.Qe3#
- 2.d3#
- 1...Qf6
- 2.Qd3#
- 2.Qe3#
- 2.d3#
- 1...Qf7
- 2.Qd3#
- 2.Qe3#
- 2.d3#
- 1...Qf8
- 2.Qd3#
- 2.Qe3#
- 2.d3#
- 1...Ba6
- 2.Bxf5#
- 2.Qxf5#
- 2.Qe3#
- 1...Qxh3!
- threat
- 1.Qh4+?
- 1...Qg4
- 2.Qxg4#
- 1...Qf4!
- 1...Qg4
- 1.Kxc3?
- Keys
- 1.Sc4!
- threat
- 2.d3#
- 1...Qxe6
- 2.g4#
- 1...Qxg6
- 2.g3#
- 1...cxd2
- 2.Qb1#
- 1...e1S
- 2.Qxe1#
- 1...Qh3
- 2.gxh3#
- 1...Qf3
- 2.gxf3#
- threat
- 1.Sc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- Q(f);OGATE::QAB(A)+P(D),XQ(f)
- Q(f);N_GUARD,XB(H)::QAB(A)+P(D)
- Q(f);N_GUARD,XS(I)::QAB(A)+P(D)
- Q(f);OGATE::P(D),XQ(f)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- P(c);N_GUARD,XS(B)::QAB(A)
- Tries
- Try
- K(E);S_FLIGHT,XP(c)
- Threat
- DUALS(2)
- Vars
- Q(f);CHECK,OGATE::QAB(A)+P(D),XQ(f)
- Q(f);CHECK,OGATE::P(D),XQ(f)
- B(h);XB(H)::QAB(A)
- B(h);::QAB(A)
- Refutation
- B(h);
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- Q(f);N_GUARD,XB(H)::QAB(A)+P(D)
- Q(f);N_GUARD,XS(I)::QAB(A)+P(D)
- B(h);XB(H)::S(B),XP(c)
- Q(f);::S(B),XP(c)
- Refutation
- P(c);XP(C)
- Try
- B(H);CHECK,XQ(f)
- Refutation
- K(d);P_SPINP(e),S_FLIGHT,XB(H)
- Try
- R(G);CHECK,XP(e)
- Refutation
- Q(f);XR(G)
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- P(c);XP(C)::QAB1(A)
- Refutation
- Q(f);XQ(A)
- Try
- Q(A);CHECK
- Vars
- Q(f);N_GUARD,P_SPINQ(f)::QAR2(A),XQ(f)
- Refutation
- Q(f);P_SPINQ(f)
- Try
- Actual
- S(B);
- Threat
- P(C)
- Vars
- Q(f);N_GUARD,XB(H)::QAB(A)+P(D)
- Q(f);N_GUARD,XS(I)::QAB(A)+P(D)
- P(c);N_GUARD,XP(C)::QAB(A)
- P(a);OGATEB::QAR(A),XS(a)
- Q(f);OGATE::QAB(A)+P(D),XQ(f)
- Q(f);OGATE::P(D),XQ(f)
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).