MESON Chess Problem Database
Problem Display
PID: 176576 (3BQ2K/2p3Np/3b4/1n1r3r/RNq2k1p/2p2P2/2BP2PP/3n4 w - - 0 1)
Robert, Philippe
Schach-Echo, 1974
#2
11 + 11
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Sd3#
- 2.Sxd5#
- 2.Qe4#
- 1...Qa2
- 2.Sd3#
- 2.Sxd5#
- 2.Qe4#
- 1...Qe2
- 2.Sd3#
- 2.Sxd5#
- 1...Qb3
- 2.Sd3#
- 2.Sxd5#
- 2.Qe4#
- 1...Qd3
- 2.Sxd3#
- 2.Sxd5#
- 1...Qd4
- 2.Sd3#
- 1...Qe4
- 2.Qxe4#
- 1...Qc5
- 2.Sd3#
- 2.Sxd5#
- 2.Qe4#
- 1...Qc6
- 2.Sd3#
- 2.Sxd5#
- 2.Qe4#
- 1...Rxd2
- 2.Sxh5#
- 1...Rd3
- 2.Sxd3#
- 1...Rd4
- 2.Sxh5#
- 1...Rc5
- 2.Sd3#
- 1...Rde5
- 2.Sd3#
- 1...Rdf5
- 2.Sd3#
- 1...Rdg5
- 2.Sd3#
- 1...Rh6
- 2.Sxd5#
- 1...Be5
- 2.Sxd5#
- 1...Sb2
- 2.Qe3#
- 1...Sf2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 2.dxe3#
- 1...Sd4
- 2.Qe4#
- 1...Qf1
- Tries
- 1.Qxh5?
- threat
- 2.Sxd5#
- 2.Se6#
- 1...Qxb4
- 2.Se6#
- 1...Rxd2
- 2.Qg5#
- 1...Rxh5
- 2.Sd3#
- 1...Bxb4
- 2.Se6#
- 1...cxd2
- 2.Sxd5#
- 1...Rf5
- 2.Sd3#
- 2.Qxf5#
- 1...Rg5
- 2.Sd3#
- 2.Qxg5#
- 1...Qe2
- 2.Sd3#
- 2.Sxd5#
- 1...Qd4
- 2.Sd3#
- 2.Sxd5#
- 1...Qe4
- 2.Sxd5#
- 1...Rd3
- 2.Sxd3#
- 2.Qf5#
- 2.Qg5#
- 1...Rd4
- 2.Qf5#
- 2.Qg5#
- 1...Rc5
- 2.Sd3#
- 1...Re5
- 2.Sd3#
- 2.Qg4#
- 2.Qxh4#
- 1...Be5
- 2.Sxd5#
- 2.Bg5#
- 2.Qg4#
- 2.Qxh4#
- 2.Qf5#
- 2.Qg5#
- 2.Qh6#
- 1...Se3
- 2.Se6#
- 1...c6
- 2.Se6#
- 1...Sd4!
- threat
- 1.Qf7+?
- 1...Ke5
- 2.Qf6#
- 1...Rdf5
- 2.Sd3#
- 1...Rhf5!
- 1...Ke5
- 1.Qe2?
- threat
- 2.Se6#
- 1...Qxe2
- 2.Sd3#
- 1...Rxd2
- 2.Sxh5#
- 1...Qe4
- 2.Qxe4#
- 1...Se3
- 2.Qxe3#
- 1...Qd3
- 2.Sxd3#
- 2.Sxd5#
- 1...Qd4
- 2.Sd3#
- 1...Rd3
- 2.Sxd3#
- 1...Rd4
- 2.Sxh5#
- 1...Rc5
- 2.Sd3#
- 1...Rde5
- 2.Sd3#
- 1...Rdf5
- 2.Sd3#
- 1...Rdg5
- 2.Sd3#
- 1...Rh6
- 2.Sxd5#
- 1...Be5
- 2.Sxd5#
- 1...Sd4
- 2.Qe4#
- 1...Rhe5!
- threat
- 1.Qxh5?
- Keys
- 1.Qe1!
- threat
- 2.Se6#
- 1...Rxd2
- 2.Sxh5#
- 1...Qe2
- 2.Sd3#
- 1...Qe4
- 2.Qxe4#
- 1...Se3
- 2.Qxe3#
- 1...Qd3
- 2.Sxd3#
- 2.Sxd5#
- 1...Qd4
- 2.Sd3#
- 1...Rd3
- 2.Sxd3#
- 1...Rd4
- 2.Sxh5#
- 1...Rc5
- 2.Sd3#
- 1...Rde5
- 2.Sd3#
- 1...Rdf5
- 2.Sd3#
- 1...Rdg5
- 2.Sd3#
- 1...Rhe5
- 2.Qxh4#
- 1...Rh6
- 2.Sxd5#
- 1...Be5
- 2.Sxd5#
- 1...Sd4
- 2.Qe4#
- threat
- 1.Qe1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- Q(c);P_PINS(H),S_CUTR(g)::S(G)
- Q(c);N_GUARD::QAR1(J),XQ(c)
- R(g);N_GUARD,XP(B)::S(H),XR(h)
- R(g);N_GUARD::S(G),XR(g)
- R(g);N_GUARD::S(H),XR(h)
- R(g);N_GUARD::S(G)
- R(h);N_GUARD::S(G),XR(g)
- B(i);P_PINS(H),S_CUTR(h)::S(G),XR(g)
- S(a);N_GUARD::QAB1(J)
- S(f);S_CUTQ(c)::QAR1(J)
- Tries
- Try
- Q(J);XR(h)
- Threat
- DUALS(2)
- Vars
- Q(c);P_SPINQ(c),XS(G)::S(H)
- R(g);N_GUARD,XP(B)::QAB1(J)
- R(g);N_GUARD,XQ(J)::S(G)
- B(i);XS(G)::S(H)
- P(b);XP(B)::S(G),XR(g)
- Q(c);::S(G),XR(g)
- R(g);N_GUARD::S(G)
- S(a);::S(H)
- P(j);::S(H)
- Refutation
- S(f);
- Try
- Q(J);CHECK
- Vars
- K(d);S_FLIGHT::QAB1(J)
- R(g);P_SPINR(g)::S(G)
- Refutation
- R(h);P_SPINR(h)
- Try
- Q(J);
- Threat
- S(H)
- Vars
- Q(c);XQ(J)::R(F)+S(G),DCHECK
- R(g);N_GUARD,XP(B)::S(H),XR(h)
- Q(c);N_GUARD::QAR1(J),XQ(c)
- S(a);N_GUARD::QAB1(J),XS(a)
- Q(c);P_PINS(H),S_CUTR(g)::S(G)
- R(g);N_GUARD::S(G),XR(g)
- R(g);N_GUARD::S(H),XR(h)
- R(g);N_GUARD::S(G)
- R(h);N_GUARD::S(G),XR(g)
- B(i);P_PINS(H),S_CUTR(h)::S(G),XR(g)
- S(f);S_CUTQ(c)::QAR1(J)
- Refutation
- R(h);
- Try
- Actual
- Q(J);
- Threat
- S(H)
- Vars
- R(g);N_GUARD,XP(B)::S(H),XR(h)
- Q(c);::R(F)+S(G),DCHECK
- Q(c);N_GUARD::QAR1(J),XQ(c)
- S(a);N_GUARD::QAB1(J),XS(a)
- Q(c);P_PINS(H),S_CUTR(g)::S(G)
- R(g);N_GUARD::S(G),XR(g)
- R(g);N_GUARD::S(H),XR(h)
- R(g);N_GUARD::S(G)
- R(h);N_GUARD,SBLOCK::QAR2(J),XP(e)
- R(h);N_GUARD::S(G),XR(g)
- B(i);P_PINS(H),S_CUTR(h)::S(G),XR(g)
- S(f);S_CUTQ(c)::QAR1(J)
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).