MESON Chess Problem Database
Problem Display
PID: 234344 (N1Rb4/1N2p3/5r2/2np4/B1kr3R/Pn4BQ/3PP1p1/5bK1 w - - 0 1)
Loustau, Jean-Marc
Phenix, 2020
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Sa1
- 2.Rxc5#
- 1...Sc1
- 2.Rxc5#
- 1...Sxd2
- 2.Rxc5#
- 1...Sa5
- 2.Rxc5#
- 1...e6
- 2.Sd6#
- 1...Sa1
- Tries
- 1.Be1?
- threat
- 2.Qxb3#
- 2.Qc3#
- 2.Qd3#
- 2.d3#
- 1...Rxh4
- 2.Qc3#
- 2.Qd3#
- 1...Bxe2
- 2.Qxb3#
- 2.Qc3#
- 1...Sxd2
- 2.Rxc5#
- 2.Qd3#
- 1...Re4
- 2.Qc3#
- 2.Qd3#
- 1...Rdf4
- 2.Qc3#
- 2.Qd3#
- 1...Rg4
- 2.Qc3#
- 2.Qd3#
- 1...Rff4
- 2.Qxb3#
- 2.Qc3#
- 1...Rb6
- 2.Qc3#
- 2.Qd3#
- 2.d3#
- 1...Rc6
- 2.Qc3#
- 1...Ba5
- 2.Qxb3#
- 2.Qd3#
- 2.d3#
- 1...Bc7
- 2.Qc3#
- 1...Sa1
- 2.Rxc5#
- 2.Qc3#
- 2.Qd3#
- 2.d3#
- 1...Sc1
- 2.Rxc5#
- 2.Qc3#
- 1...Sa5
- 2.Rxc5#
- 2.Qc3#
- 2.Qd3#
- 2.d3#
- 1...Rf3!
- threat
- 1.Bf2?
- threat
- 2.Qxb3#
- 2.Qc3#
- 2.Qd3#
- 1...Bxe2
- 2.Qxb3#
- 2.Qc3#
- 1...Sxd2
- 2.Rxd4#
- 2.Rxc5#
- 2.Qd3#
- 1...Rff4
- 2.Qxb3#
- 2.Qc3#
- 1...Rb6
- 2.Qc3#
- 2.Qd3#
- 1...Rc6
- 2.Qc3#
- 1...Ba5
- 2.Qxb3#
- 2.Qd3#
- 1...Bc7
- 2.Qc3#
- 1...Sa1
- 2.Rxd4#
- 2.Rxc5#
- 2.Qc3#
- 2.Qd3#
- 1...Sc1
- 2.Rxd4#
- 2.Rxc5#
- 2.Qc3#
- 1...Sa5
- 2.Rxd4#
- 2.Rxc5#
- 2.Qc3#
- 2.Qd3#
- 1...Rf3!
- threat
- 1.Bh2?
- threat
- 2.Qxb3#
- 2.Qc3#
- 2.Qd3#
- 1...Rxh4
- 2.Qc3#
- 2.Qd3#
- 1...Bxe2
- 2.Qxb3#
- 2.Qc3#
- 1...Sxd2
- 2.Rxc5#
- 2.Qd3#
- 1...Re4
- 2.Qc3#
- 2.Qd3#
- 1...Rdf4
- 2.Qc3#
- 2.Qd3#
- 1...Rg4
- 2.Qc3#
- 2.Qd3#
- 1...Rff4
- 2.Qxb3#
- 2.Qc3#
- 1...Rb6
- 2.Qc3#
- 2.Qd3#
- 1...Rc6
- 2.Qc3#
- 1...Ba5
- 2.Qxb3#
- 2.Qd3#
- 1...Bc7
- 2.Qc3#
- 1...Sa1
- 2.Rxc5#
- 2.Qc3#
- 2.Qd3#
- 1...Sc1
- 2.Rxc5#
- 2.Qc3#
- 1...Sa5
- 2.Rxc5#
- 2.Qc3#
- 2.Qd3#
- 1...Rf3!
- threat
- 1.Bf4?
- threat
- 2.Qxb3#
- 2.Qc3#
- 1...Rdxf4
- 2.Qc3#
- 2.Qd3#
- 1...Sxd2
- 2.Rxc5#
- 1...Rd3
- 2.Qxd3#
- 1...Re4
- 2.Qc3#
- 2.Qd3#
- 1...Rb6
- 2.Qc3#
- 1...Rc6
- 2.Qc3#
- 1...Ba5
- 2.Qxb3#
- 1...Bc7
- 2.Qc3#
- 1...Sa1
- 2.Rxc5#
- 2.Qc3#
- 1...Sc1
- 2.Rxc5#
- 2.Qc3#
- 1...Sa5
- 2.Rxc5#
- 2.Qc3#
- 1...Rxd2!
- threat
- 1.Be5?
- threat
- 2.Qxb3#
- 2.Qc3#
- 2.Qd3#
- 1...Bxe2
- 2.Qxb3#
- 2.Qc3#
- 1...Sxd2
- 2.Rxd4#
- 2.Rxc5#
- 2.Qd3#
- 1...Rff4
- 2.Qxb3#
- 2.Qc3#
- 1...Rb6
- 2.Qc3#
- 2.Qd3#
- 1...Rc6
- 2.Qc3#
- 1...Ba5
- 2.Qxb3#
- 2.Qd3#
- 1...Bc7
- 2.Qc3#
- 1...Sa1
- 2.Rxd4#
- 2.Rxc5#
- 2.Qc3#
- 2.Qd3#
- 1...Sc1
- 2.Rxd4#
- 2.Rxc5#
- 2.Qc3#
- 1...Sa5
- 2.Rxd4#
- 2.Rxc5#
- 2.Qc3#
- 2.Qd3#
- 1...Rf3!
- threat
- 1.Bd6?
- threat
- 2.Qxb3#
- 2.Qc3#
- 2.Qd3#
- 1...Rxh4
- 2.Qc3#
- 2.Qd3#
- 1...Bxe2
- 2.Qxb3#
- 2.Qc3#
- 1...Sxd2
- 2.Rxc5#
- 2.Qd3#
- 1...Re4
- 2.Qc3#
- 2.Qd3#
- 1...Rdf4
- 2.Qc3#
- 2.Qd3#
- 1...Rg4
- 2.Qc3#
- 2.Qd3#
- 1...Rff4
- 2.Qxb3#
- 2.Qc3#
- 1...Ba5
- 2.Qxb3#
- 2.Qd3#
- 1...Bc7
- 2.Qc3#
- 1...Sa1
- 2.Rxc5#
- 2.Qc3#
- 2.Qd3#
- 1...Sc1
- 2.Rxc5#
- 2.Qc3#
- 1...Sa5
- 2.Rxc5#
- 2.Qc3#
- 2.Qd3#
- 1...Rf3!
- threat
- 1.Bb8?
- threat
- 2.Qxb3#
- 2.Qc3#
- 2.Qd3#
- 1...Rxh4
- 2.Qc3#
- 2.Qd3#
- 1...Bxe2
- 2.Qxb3#
- 2.Qc3#
- 1...Sxd2
- 2.Rxc5#
- 2.Qd3#
- 1...Re4
- 2.Qc3#
- 2.Qd3#
- 1...Rdf4
- 2.Qc3#
- 2.Qd3#
- 1...Rg4
- 2.Qc3#
- 2.Qd3#
- 1...Rff4
- 2.Qxb3#
- 2.Qc3#
- 1...Rb6
- 2.Qc3#
- 2.Qd3#
- 1...Rc6
- 2.Qc3#
- 1...Ba5
- 2.Qxb3#
- 2.Qd3#
- 1...Bc7
- 2.Qc3#
- 1...Sa1
- 2.Rxc5#
- 2.Qc3#
- 2.Qd3#
- 1...Sc1
- 2.Rxc5#
- 2.Qc3#
- 1...Sa5
- 2.Rxc5#
- 2.Qc3#
- 2.Qd3#
- 1...Rf3!
- threat
- 1.Rxd4+?
- 1...Sxd4
- 2.Rxc5#
- 1...Kxd4!
- 1...Sxd4
- 1.Be1?
- Keys
- 1.Bc7!
- threat
- 2.Qc3#
- 1...Sxd2
- 2.Sa5#
- 1...Sxa4
- 2.Qd3#
- 1...Rf3
- 2.Sb6#
- 1...Sd3
- 2.Qxd3#
- 1...Se4
- 2.Qxb3#
- threat
- 1.Bc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- S(c);N_GUARD::R1(K),XS(f)
- S(c);N_GUARD,XP(B)::R1(K),XS(f)
- P(i);N_GUARD,S_CUTR(h)::S(I)
- Tries
- Try
- B(E);
- Threat
- DUALS(4)
- Vars
- R(h);N_SPINS(f)::QAR1(F)
- B(j);N_SPINS(f)::QAR1(F)
- Refutation
- R(h);
- Try
- B(E);
- Threat
- DUALS(3)
- Vars
- R(h);N_SPINS(f)::QAR1(F)
- B(j);N_SPINS(f)::QAR1(F)
- Refutation
- R(h);
- Try
- B(E);
- Threat
- DUALS(3)
- Vars
- R(h);N_SPINS(f)::QAR1(F)
- B(j);N_SPINS(f)::QAR1(F)
- Refutation
- R(h);
- Try
- B(E);N_PINR(e)
- Threat
- DUALS(2)
- Vars
- S(c);N_GUARD,XP(B)::R1(K),XS(f)
- R(e);N_GUARD::QAB1(F),XR(e)
- R(h);::QAR1(F)
- R(h);N_SPINS(f)::QAR1(F)
- B(j);::QAB1(F),XS(c)
- B(j);N_SPINS(f)::QAR1(F)
- Refutation
- R(e);XP(B)
- Try
- B(E);
- Threat
- DUALS(3)
- Vars
- R(h);N_SPINS(f)::QAR1(F)
- B(j);N_SPINS(f)::QAR1(F)
- Refutation
- R(h);
- Try
- B(E);
- Threat
- DUALS(3)
- Vars
- B(j);N_SPINS(f)::QAR1(F)
- Refutation
- R(h);
- Try
- B(E);
- Threat
- DUALS(3)
- Vars
- R(h);N_SPINS(f)::QAR1(F)
- B(j);N_SPINS(f)::QAR1(F)
- Refutation
- R(h);
- Try
- R(H);CHECK,XR(e)
- Vars
- S(c);SBLOCK,XR(H)::R1(K),XS(f)
- Refutation
- K(d);N_SPINS(f),P-FLIGHT,XR(H)
- Try
- Actual
- B(E);N_PINS(f)
- Threat
- QAR1(F)
- Vars
- S(c);N_GUARD,XP(B)::S(I)
- S(f);N_GUARD,XB(G)::QAB1(F)
- R(h);N_GUARD::S(J)
- S(f);N_GUARD::QAB1(F),XS(f)
- S(f);N_GUARD,N_SPINR(e)::QAB1(F),XS(c)
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).