MESON Chess Problem Database
Problem Display
PID: 87764 (4BNbr/7P/2pP1k1P/3pn3/3nRPp1/2B1Np2/Q7/bK6 w - - 0 1)
Rupp, Robert
American Chess Problemist, 1951
#2
11 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sf5
- 2.Sxg4#
- 1...Se6
- 2.Sd7#
- 1...Sd3
- 2.Sd7#
- 1...Sc4
- 2.Sd7#
- 1...Sg6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sf7
- 2.Re6#
- 1...Sf5
- Tries
- 1.Rxe5?
- threat
- 2.Sxg4#
- 2.Sd7#
- 2.Rf5#
- 1...Rxh7
- 2.Sxg4#
- 2.Rf5#
- 1...Bxc3
- 2.Sxg4#
- 2.Sd7#
- 1...Sf5
- 2.Sxg4#
- 2.Sd7#
- 2.Rxf5#
- 2.Re6#
- 1...Be6
- 2.Rxe6#
- 1...Bf7
- 2.Sxg4#
- 2.Rf5#
- 1...g3
- 2.Sg4#
- 2.Sd7#
- 2.Rf5#
- 1...Bxh7+!
- threat
- 1.Qf2?
- threat
- 2.Qh4#
- 1...Sf5
- 2.Sxg4#
- 1...Se6
- 2.Sd7#
- 1...Sg6
- 2.Sd7#
- 1...Sf7
- 2.Re6#
- 1...g3!
- threat
- 1.Qa5?
- threat
- 2.Qd8#
- 1...Sf5
- 2.Sxg4#
- 1...Se6
- 2.Sd7#
- 1...Sg6
- 2.Sd7#
- 1...Sf7
- 2.Re6#
- 1...Rxh7!
- threat
- 1.Qa7?
- threat
- 2.Qe7#
- 2.Qg7#
- 1...Sf5
- 2.Sxg4#
- 1...Bf7
- 2.Qe7#
- 1...Se6
- 2.Sd7#
- 2.Qe7#
- 1...Sg6
- 2.Sd7#
- 2.Qg7#
- 1...Sd7
- 2.Sxd7#
- 1...Sf7
- 2.Re6#
- 2.Qe7#
- 1...Rxh7!
- threat
- 1.Qa8?
- threat
- 2.Qd8#
- 1...Sf5
- 2.Sxg4#
- 1...Se6
- 2.Sd7#
- 1...Sg6
- 2.Sd7#
- 1...Sf7
- 2.Re6#
- 1...Rxh7!
- threat
- 1.hxg8Q?
- threat
- 2.Qg5#
- 2.Qg7#
- 2.Qxh8#
- 2.fxe5#
- 1...Rxh6
- 2.Qg5#
- 2.fxe5#
- 1...dxe4
- 2.Qg5#
- 2.Qg7#
- 2.Qxh8#
- 1...Sf5
- 2.Sxg4#
- 2.Sd7#
- 2.Qe6#
- 2.Qf7#
- 2.Qg5#
- 2.Qg6#
- 2.fxe5#
- 1...Rh7
- 2.Sxh7#
- 2.Qg5#
- 2.fxe5#
- 1...Se6
- 2.Sd7#
- 2.Qxe6#
- 2.Qf7#
- 2.Qg6#
- 2.fxe5#
- 1...Sd3
- 2.Sd7#
- 2.Re6#
- 2.Qe6#
- 2.Qf7#
- 2.Qg5#
- 2.Qg6#
- 2.Qg7#
- 2.Qxh8#
- 1...Sc4
- 2.Sd7#
- 2.Re6#
- 2.Qe6#
- 2.Qf7#
- 2.Qg5#
- 2.Qg6#
- 2.Qg7#
- 2.Qxh8#
- 1...Sg6
- 2.Sd7#
- 2.Re6#
- 2.Qe6#
- 2.Qf7#
- 2.Qxg6#
- 2.Qg7#
- 1...Sd7
- 2.Sxd7#
- 2.Re6#
- 2.Qe6#
- 2.Qf7#
- 2.Qg5#
- 2.Qg6#
- 2.Qg7#
- 2.Qxh8#
- 1...Sf7
- 2.Sd7#
- 2.Re6#
- 2.Qxf7#
- 2.Qg6#
- 2.Qg7#
- 1...Rxg8!
- threat
- 1.Rxe5?
- Keys
- 1.Qh2!
- threat
- 2.Qh4#
- 1...Sf5
- 2.Sxg4#
- 1...Se6
- 2.Sd7#
- 1...Sg6
- 2.Sd7#
- 1...Sf7
- 2.Re6#
- threat
- 1.Qh2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- S(c);P_SPINS(f),SBLOCK::S(D),XP(d)
- S(c);P_SPINS(f),SBLOCK::S(K)
- S(f);N_GUARD,P_SPINS(c)::S(K)
- S(f);N_GUARD,P_SPINS(c)::S(K),XS(f)
- S(f);OGATE,P_SPINS(c)::R1(E)
- Tries
- Try
- R(E);XS(f)
- Threat
- DUALS(3)
- Vars
- B(i);N_GUARD::R1(E),XB(i)
- Refutation
- B(i);CHECK,XP(I)
- Try
- Q(B);
- Threat
- QAB(B)
- Vars
- S(c);P_SPINS(f),SBLOCK::S(D),XP(d)
- S(c);P_SPINS(f),SBLOCK::S(K)
- S(f);N_GUARD,P_SPINS(c)::S(K)
- S(f);OGATE,P_SPINS(c)::R1(E)
- Refutation
- P(d);
- Try
- Q(B);
- Threat
- QAB(B)
- Vars
- S(c);P_SPINS(f),SBLOCK::S(D),XP(d)
- S(c);P_SPINS(f),SBLOCK::S(K)
- S(f);N_GUARD,P_SPINS(c)::S(K)
- S(f);OGATE,P_SPINS(c)::R1(E)
- Refutation
- R(j);XP(I)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- S(c);P_SPINS(f),SBLOCK::S(D),XP(d)
- B(i);::QAB1(B)
- S(f);N_GUARD,P_SPINS(c)::S(K),XS(f)
- Refutation
- R(j);XP(I)
- Try
- Q(B);
- Threat
- QAB(B)
- Vars
- S(c);P_SPINS(f),SBLOCK::S(D),XP(d)
- S(c);P_SPINS(f),SBLOCK::S(K)
- S(f);N_GUARD,P_SPINS(c)::S(K)
- S(f);OGATE,P_SPINS(c)::R1(E)
- Refutation
- R(j);XP(I)
- Try
- P(I);XB(i)
- Threat
- DUALS(4)
- Refutation
- R(j);XQ(I)
- Try
- Actual
- Q(B);
- Threat
- QAB(B)
- Vars
- S(c);P_SPINS(f),SBLOCK::S(D),XP(d)
- S(c);P_SPINS(f),SBLOCK::S(K)
- S(f);N_GUARD,P_SPINS(c)::S(K)
- S(f);OGATE,P_SPINS(c)::R1(E)
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).