MESON Chess Problem Database
Problem Display
PID: 259463 (1K1R1n1B/3b2R1/8/1p2r3/1PpkBnp1/NPN1p3/1QP1P2b/8 w - - 0 1)
Cheylan, Yves
Die Schwalbe, 1977
#2
12 + 10
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rxe4
- 2.Rgxd7#
- 1...Rc5
- 2.Rgxd7#
- 1...Rd5
- 2.Rgxd7#
- 1...Rf5
- 2.Rgxd7#
- 1...Rg5
- 2.Rxg5#
- 2.Rgxd7#
- 1...Rh5
- 2.Rgxd7#
- 1...Re6
- 2.Rgxd7#
- 1...Re7
- 2.Rxe7#
- 1...Re8
- 2.Rxd7#
- 2.Re7#
- 1...Rxe4
- Tries
- 1.Bh1?
- threat
- 2.Scxb5#
- 1...Re4
- 2.Rgxd7#
- 1...Sg2!
- threat
- 1.Bg2?
- threat
- 2.Scxb5#
- 1...Re4
- 2.Rgxd7#
- 1...Sxg2!
- threat
- 1.Bf3?
- threat
- 2.Scxb5#
- 1...Re4
- 2.Rgxd7#
- 1...gxf3!
- threat
- 1.Bb7?
- threat
- 2.Scxb5#
- 1...Rd5
- 2.Rgxd7#
- 1...Sd5!
- threat
- 1.Ba8?
- threat
- 2.Scxb5#
- 1...Rd5
- 2.Rgxd7#
- 1...Sd5!
- threat
- 1.Rxg4?
- threat
- 2.Saxb5#
- 1...Sd5
- 2.Scxb5#
- 1...cxb3!
- threat
- 1.Rg5?
- threat
- 2.Saxb5#
- 2.Bxe5#
- 1...Sxe2
- 2.Saxb5#
- 1...cxb3
- 2.Bxe5#
- 1...Sg2
- 2.Saxb5#
- 1...Sd3
- 2.Saxb5#
- 1...Sh3
- 2.Saxb5#
- 1...Sh5
- 2.Saxb5#
- 1...S4e6
- 2.Saxb5#
- 1...S4g6
- 2.Saxb5#
- 1...S8g6
- 2.Saxb5#
- 1...Sd5!
- threat
- 1.Rgxd7+?
- 1...Sd5
- 2.Saxb5#
- 2.Rxd5#
- 1...Sxd7+!
- 1...Sd5
- 1.Re7?
- threat
- 2.Saxb5#
- 2.Bxe5#
- 1...Sxe2
- 2.Saxb5#
- 1...cxb3
- 2.Bxe5#
- 1...Sg2
- 2.Saxb5#
- 1...Sd3
- 2.Saxb5#
- 1...Sh3
- 2.Saxb5#
- 1...Sh5
- 2.Saxb5#
- 1...S4e6
- 2.Saxb5#
- 1...S4g6
- 2.Saxb5#
- 1...S8e6
- 2.Saxb5#
- 1...S8g6
- 2.Saxb5#
- 1...Sd5!
- threat
- 1.Rdxd7+?
- 1...Rd5
- 2.Rxg4#
- 2.Rg5#
- 2.Rg6#
- 2.Rge7#
- 2.Rgf7#
- 2.Rh7#
- 2.Rg8#
- 1...Sd5
- 2.Saxb5#
- 1...Sxd7+!
- 1...Rd5
- 1.Bh1?
- Keys
- 1.Bc6!
- threat
- 2.Scxb5#
- 1...Rd5
- 2.Rgxd7#
- 1...Sd5
- 2.Saxb5#
- threat
- 1.Bc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- R(h);XB(H)::B(L)+R(I),DCHECK,XB(i)
- R(h);::B(L)+R(I),DCHECK,XB(i)
- R(h);N_SPINB(i),S_CUTS(e),S_CUTS(j)::B(L)+R(I),XB(i)
- R(h);OGATEB::B(L)+R(I),XR(h)
- Tries
- Try
- B(H);
- Threat
- QAB(A)+S(F),DCHECK,XP(g)
- Vars
- R(h);::B(L)+R(I),DCHECK,XB(i)
- Refutation
- S(e);
- Try
- B(H);
- Threat
- QAB(A)+S(F),DCHECK,XP(g)
- Vars
- R(h);::B(L)+R(I),DCHECK,XB(i)
- Refutation
- S(e);XB(H)
- Try
- B(H);
- Threat
- QAB(A)+S(F),DCHECK,XP(g)
- Vars
- R(h);::B(L)+R(I),DCHECK,XB(i)
- Refutation
- P(f);XB(H)
- Try
- B(H);
- Threat
- QAB(A)+S(F),DCHECK,XP(g)
- Vars
- R(h);N_SPINB(i),S_CUTS(e),S_CUTS(j)::B(L)+R(I),XB(i)
- Refutation
- S(e);N_SPINB(i)
- Try
- B(H);
- Threat
- QAB(A)+S(F),DCHECK,XP(g)
- Vars
- R(h);N_SPINB(i),S_CUTS(e),S_CUTS(j)::B(L)+R(I),XB(i)
- Refutation
- S(e);N_SPINB(i)
- Try
- R(I);P_PINR(h),XP(f)
- Threat
- S(D),XP(g)
- Vars
- S(e);N_SPINB(i)::QAB(A)+S(F),DCHECK,XP(g)
- Refutation
- P(c);XP(E)
- Try
- R(I);P_PINR(h)
- Threat
- DUALS(2)
- Vars
- S(e);XP(C)::S(D),XP(g)
- P(c);XP(E)::B(L),XR(h)
- S(e);::S(D),XP(g)
- S(j);::S(D),XP(g)
- Refutation
- S(e);N_SPINB(i)
- Try
- R(I);CHECK,P_PINR(h),XB(i)
- Refutation
- S(j);CHECK,P_SPINS(j),XR(I)
- Try
- R(I);P_PINR(h)
- Threat
- DUALS(2)
- Vars
- S(e);XP(C)::S(D),XP(g)
- P(c);XP(E)::B(L),XR(h)
- S(e);::S(D),XP(g)
- S(j);::S(D),XP(g)
- Refutation
- S(e);N_SPINB(i)
- Try
- R(K);CHECK,XB(i)
- Vars
- S(e);P_SPINS(e)::S(D),XP(g)
- Refutation
- S(j);CHECK,XR(K)
- Try
- Actual
- B(H);
- Threat
- QAB(A)+S(F),DCHECK,XP(g)
- Vars
- R(h);N_SPINB(i),S_CUTS(e),S_CUTS(j)::B(L)+R(I),XB(i)
- S(e);N_SPINB(i),S_CUTR(h)::S(D),XP(g)
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).