MESON Chess Problem Database
Problem Display
PID: 7387 (8/3pb1r1/1n3R2/1K1kNB1Q/2p2B2/4p3/2N3b1/5n2 w - - 0 1)
Narayanan, Chithathuz Gopatan Sathya
5th HM., StrateGems, 1999
#2
7 + 9
| 145 | StrateGems | 2000 |
SOLUTION
- SOUND
- Sets
- 1...Rg3
- 2.Qf7#
- 1...Rg4
- 2.Qf7#
- 1...Rg5
- 2.Qf7#
- 1...Rf7
- 2.Qxf7#
- 1...Rg8
- 2.Qf7#
- 1...Bf3
- 2.Qxf3#
- 1...Bh3
- 2.Qf3#
- 1...Sh2
- 2.Qd1#
- 1...Sg3
- 2.Qd1#
- 1...Rg3
- Tries
- 1.Sd3?
- threat
- 2.Bg6#
- 1...Bxf6
- 2.Sdb4#
- 1...Rg3
- 2.Qf7#
- 1...Rg4
- 2.Qf7#
- 1...Rg5
- 2.Qf7#
- 1...Rg6
- 2.Bxg6#
- 1...Rh7
- 2.Bxh7#
- 1...Bf3
- 2.Qxf3#
- 1...Bh3
- 2.Qf3#
- 1...Be4
- 2.Be6#
- 1...Bd6
- 2.Rxd6#
- 1...Sg3!
- threat
- 1.Sf3?
- threat
- 2.Bg6#
- 1...Bxf3
- 2.Qxf3#
- 1...Bxf6
- 2.Sb4#
- 1...Rg3
- 2.Qf7#
- 1...Rg4
- 2.Qf7#
- 1...Rg5
- 2.Qf7#
- 1...Rg6
- 2.Bxg6#
- 1...Rh7
- 2.Bxh7#
- 1...Bd6
- 2.Rxd6#
- 1...Sg3
- 2.Sxe3#
- 1...Bh3!
- threat
- 1.Sxc4?
- threat
- 2.Sxb6#
- 2.Bg6#
- 1...Bxf6
- 2.Sxb6#
- 1...Rg3
- 2.Sxb6#
- 2.Qf7#
- 1...Rg4
- 2.Sxb6#
- 2.Qf7#
- 1...Rg5
- 2.Sxb6#
- 2.Qf7#
- 1...Rg6
- 2.Sxb6#
- 2.Bxg6#
- 1...Rh7
- 2.Sxb6#
- 2.Bxh7#
- 1...Bf3
- 2.Sxb6#
- 2.Qxf3#
- 1...Bh3
- 2.Sxb6#
- 2.Qf3#
- 1...Be4
- 2.Sxb6#
- 2.Be6#
- 1...Bc5
- 2.Bg6#
- 1...Bd6
- 2.Sxb6#
- 2.Rxd6#
- 1...Bd8
- 2.Bg6#
- 2.Rd6#
- 1...Sg3
- 2.S4xe3#
- 2.Sxb6#
- 2.Qd1#
- 1...Sa4
- 2.Bg6#
- 1...Sa8
- 2.Bg6#
- 1...Sc8
- 2.Bg6#
- 1...Sxc4!
- threat
- 1.Sc6?
- threat
- 2.Bg6#
- 1...Bxf6
- 2.S2b4#
- 2.S6b4#
- 1...Rg3
- 2.Sxe7#
- 2.Qf7#
- 1...Rg4
- 2.Sxe7#
- 2.Qf7#
- 1...Rg5
- 2.Sxe7#
- 2.Qf7#
- 1...Rg6
- 2.Sxe7#
- 2.Bxg6#
- 1...Rh7
- 2.Bxh7#
- 1...Bf3
- 2.Qxf3#
- 1...Bh3
- 2.Qf3#
- 1...Be4
- 2.Be6#
- 1...Bd6
- 2.Rxd6#
- 1...Sg3
- 2.Sxe3#
- 2.Qd1#
- 1...dxc6+!
- threat
- 1.Sxd7?
- threat
- 2.Sxb6#
- 2.Bg6#
- 1...Bxf6
- 2.Sxb6#
- 2.Sxf6#
- 1...Rg3
- 2.Sxb6#
- 2.Qf7#
- 1...Rg4
- 2.Sxb6#
- 2.Qf7#
- 1...Rg5
- 2.Sxb6#
- 2.Qf7#
- 1...Rg6
- 2.Sxb6#
- 2.Bxg6#
- 1...Rh7
- 2.Sxb6#
- 2.Bxh7#
- 1...Bf3
- 2.Sxb6#
- 2.Qxf3#
- 1...Bh3
- 2.Sxb6#
- 2.Qf3#
- 1...Be4
- 2.Sxb6#
- 2.Be6#
- 1...Bc5
- 2.Bg6#
- 1...Bd6
- 2.Sxb6#
- 2.Rxd6#
- 1...Bd8
- 2.Bg6#
- 2.Rd6#
- 1...Sg3
- 2.Sxb6#
- 2.Qd1#
- 1...Sa4
- 2.Bg6#
- 1...Sa8
- 2.Bg6#
- 1...Sc8
- 2.Bg6#
- 1...Sxd7!
- threat
- 1.Be6+?
- 1...Ke4
- 2.Qf5#
- 1...Kd6
- 2.Sd3#
- 2.Sf3#
- 2.Sxc4#
- 2.Sg4#
- 2.Sc6#
- 2.Sg6#
- 2.Sxd7#
- 2.Sf7#
- 1...dxe6!
- 1...Ke4
- 1.Sd3?
- Keys
- 1.Sg4!
- threat
- 2.Bg6#
- 1...Rxg4
- 2.Qf7#
- 1...Bxf6
- 2.Sxf6#
- 1...Rg5
- 2.Qf7#
- 1...Rg6
- 2.Bxg6#
- 1...Rh7
- 2.Bxh7#
- 1...Be4
- 2.Be6#
- 1...Bd6
- 2.Rxd6#
- 1...Sg3
- 2.Sgxe3#
- threat
- 1.Sg4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 6
- Sets
- R(i);N_GUARD::QAB(F)
- R(i);N_GUARD::QAB(F),XR(i)
- B(b);N_GUARD::QAB(F),XB(b)
- B(b);N_GUARD::QAB(F)
- S(a);N_GUARD::QAR(F)
- Tries
- Try
- S(D);
- Threat
- QAR(F)+B(E)
- Vars
- B(h);N_GUARD,XR(G)::S(D)
- R(i);N_GUARD::QAB(F)
- R(i);::QAR(F)+B(E),XR(i)
- R(i);N_GUARD::QAR(F)+B(E),XR(i)
- B(b);N_GUARD::QAB(F),XB(b)
- B(b);N_GUARD::QAB(F)
- B(b);SBLOCK::QAR(F)+B(E),DCHECK
- B(h);N_GUARD::R1(G),XB(h)
- Refutation
- S(a);
- Try
- S(D);
- Threat
- QAR(F)+B(E)
- Vars
- B(b);OGATE,XS(D)::QAB(F),XB(b)
- B(h);N_GUARD,XR(G)::S(A)
- R(i);N_GUARD::QAB(F)
- R(i);::QAR(F)+B(E),XR(i)
- R(i);N_GUARD::QAR(F)+B(E),XR(i)
- B(h);N_GUARD::R1(G),XB(h)
- S(a);N_GUARD::S(A),XP(c)
- Refutation
- B(b);
- Try
- S(D);XP(d)
- Threat
- DUALS(2)
- Vars
- B(h);XR(G)::S(D),XS(f)
- B(h);::QAR(F)+B(E)
- S(f);::QAR(F)+B(E)
- Refutation
- S(f);XS(D)
- Try
- S(D);
- Threat
- QAR(F)+B(E)
- Vars
- R(i);N_GUARD::QAR(F)+B(E),XR(i)
- B(b);N_GUARD::QAB(F),XB(b)
- B(b);N_GUARD::QAB(F)
- B(b);SBLOCK::QAR(F)+B(E),DCHECK
- B(h);N_GUARD::R1(G),XB(h)
- Refutation
- P(g);CHECK,XS(D)
- Try
- S(D);XP(g)
- Threat
- DUALS(2)
- Vars
- B(h);::QAR(F)+B(E)
- S(f);::QAR(F)+B(E)
- Refutation
- S(f);XS(D)
- Try
- B(E);CHECK
- Vars
- K(e);S_FLIGHT::QAB1(F)
- Refutation
- P(g);XB(E)
- Try
- Actual
- S(D);
- Threat
- QAR(F)+B(E)
- Vars
- R(i);N_GUARD,XS(D)::QAB(F)
- B(h);XR(G)::S(D),XB(h)
- R(i);N_GUARD::QAB(F)
- R(i);::QAR(F)+B(E),XR(i)
- R(i);N_GUARD::QAR(F)+B(E),XR(i)
- B(b);SBLOCK::QAR(F)+B(E),DCHECK
- B(h);N_GUARD::R1(G),XB(h)
- S(a);N_GUARD::S(D),XP(c)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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