MESON Chess Problem Database
Problem Display
PID: 70822 (5n2/3p3p/3Rp1pR/8/2p1BkN1/2p2N1K/2P1Q1n1/8 w - - 0 1)
Servais, Albert
Het Belgisch Schaakbord (L'Echiquier Belge), 1942
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Se1
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sh4
- 2.Qe3#
- 1...e5
- 2.Rf6#
- 1...g5
- 2.Rf6#
- 1...Se1
- Tries
- 1.Sfe5?
- 1...Se3
- 2.Qxe3#
- 1...Se1
- 2.Qe3#
- 1...Sh4
- 2.Qe3#
- 1...g5
- 2.Rf6#
- 2.Qf3#
- 1...Kg5!
- 1...Se3
- 1.Sf2?
- 1...e5
- 2.Rf6#
- 1...Se1
- 2.Rh4#
- 1...Sh4
- 2.Rxh4#
- 1...g5
- 2.Rf6#
- 1...Se3!
- 1...e5
- 1.Sgh2?
- 1...e5
- 2.Rf6#
- 1...Se1
- 2.Rh4#
- 1...Sh4
- 2.Rxh4#
- 1...g5
- 2.Rf6#
- 1...Se3!
- 1...e5
- 1.Se3?
- threat
- 2.Sxg2#
- 1...Kxe4
- 2.Rd4#
- 1...Se1
- 2.Rh4#
- 1...Sh4
- 2.Rxh4#
- 1...Sxe3!
- threat
- 1.Sge5?
- 1...Se1
- 2.Rh4#
- 1...Sh4
- 2.Rxh4#
- 1...g5
- 2.Rf6#
- 1...Se3!
- 1...Se1
- 1.Bd3?
- threat
- 2.Rd4#
- 2.Qe4#
- 1...e5
- 2.Rf6#
- 2.Qe4#
- 1...Se3
- 2.Rd4#
- 2.Qxe3#
- 1...cxd3!
- threat
- 1.Bd5?
- threat
- 2.Qe4#
- 2.Qe5#
- 1...Kf5
- 2.Qe4#
- 2.Qe5#
- 1...exd5
- 2.Rf6#
- 1...e5
- 2.Rf6#
- 2.Qe4#
- 2.Qxe5#
- 1...Se3!
- threat
- 1.Bf5?
- threat
- 2.Qe4#
- 1...Kxf5
- 2.Qe5#
- 1...exf5
- 2.Rd4#
- 1...gxf5
- 2.Rd4#
- 1...Se3!
- threat
- 1.Bb7?
- threat
- 2.Qe4#
- 2.Qe5#
- 1...Kf5
- 2.Qe4#
- 2.Qe5#
- 1...e5
- 2.Rf6#
- 2.Qe4#
- 2.Qxe5#
- 1...Se3!
- threat
- 1.Ba8?
- threat
- 2.Qe4#
- 2.Qe5#
- 1...Kf5
- 2.Qe4#
- 2.Qe5#
- 1...e5
- 2.Rf6#
- 2.Qe4#
- 2.Qxe5#
- 1...Se3!
- threat
- 1.Rd4?
- threat
- 2.Bd3#
- 2.Bxg6#
- 1...g5
- 2.Bd3#
- 2.Bg6#
- 2.Bxh7#
- 2.Rf6#
- 1...e5!
- threat
- 1.Rxd7?
- threat
- 2.Rf7#
- 1...Se3
- 2.Qxe3#
- 1...Sh4
- 2.Qe3#
- 1...Sxd7!
- threat
- 1.Rxh7?
- threat
- 2.Rf7#
- 1...Se3
- 2.Qxe3#
- 1...Sh4
- 2.Qe3#
- 1...Sxh7!
- threat
- 1.Qd3?
- 1...e5
- 2.Rf6#
- 1...Se1
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sh4
- 2.Qe3#
- 1...g5
- 2.Rf6#
- 1...cxd3!
- 1...e5
- 1.Qe1?
- 1...Se3
- 2.Qxe3#
- 1...e5
- 2.Rf6#
- 1...Sh4
- 2.Qe3#
- 1...g5
- 2.Rf6#
- 1...Sxe1!
- 1...Se3
- 1.Qf2?
- 1...Kxe4
- 2.Sg5#
- 1...Se1
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sh4
- 2.Qe3#
- 1...g5
- 2.Sd2#
- 1...e5!
- 1...Kxe4
- 1.Sfe5?
- Keys
- 1.Sf6!
- 1...e5
- 2.Sd5#
- 1...Se1
- 2.Rh4#
- 1...Se3
- 2.Qh2#
- 1...Sh4
- 2.Rxh4#
- 1...g5
- 2.Sh5#
- 1...e5
- 1.Sf6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 5
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::QAB1(B)
- S(a);N_GUARD::QAB1(B),XS(a)
- P(e);OGATE::R(G)
- P(f);OGATE::R(H)
- Tries
- Try
- S(C);
- Vars
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- Refutation
- K(d);S_FLIGHT
- Try
- S(F);
- Vars
- P(e);OGATE::R(G)
- S(a);N_GUARD::R(H)
- S(a);N_GUARD::R(H),XS(a)
- P(f);OGATE::R(H)
- Refutation
- S(a);
- Try
- S(F);
- Vars
- P(e);OGATE::R(G)
- S(a);N_GUARD::R(H)
- S(a);N_GUARD::R(H),XS(a)
- P(f);OGATE::R(H)
- Refutation
- S(a);
- Try
- S(F);
- Threat
- S(F),XS(a)
- Vars
- K(d);OGATEB,P-FLIGHT,XB(E)::R1(G)
- S(a);N_GUARD::R(H)
- S(a);N_GUARD::R(H),XS(a)
- Refutation
- S(a);XS(F)
- Try
- S(F);
- Vars
- S(a);N_GUARD::R(H)
- S(a);N_GUARD::R(H),XS(a)
- P(f);OGATE::R(H)
- Refutation
- S(a);
- Try
- B(E);
- Threat
- DUALS(2)
- Refutation
- P(c);XB(E)
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- P(e);OGATE,XB(E)::R(G)
- Refutation
- S(a);
- Try
- B(E);
- Threat
- QAR1(B)
- Vars
- K(d);P-FLIGHT,XB(E)::QAR1(B)
- P(e);SBLOCK,XB(E)::R(G)
- P(f);SBLOCK,XB(E)::R(G)
- Refutation
- S(a);
- Try
- B(E);
- Threat
- DUALS(2)
- Refutation
- S(a);
- Try
- B(E);
- Threat
- DUALS(2)
- Refutation
- S(a);
- Try
- R(G);
- Threat
- DUALS(2)
- Refutation
- P(e);
- Try
- R(G);XP(g)
- Threat
- R(G)
- Vars
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- Refutation
- S(i);XR(G)
- Try
- R(H);XP(h)
- Threat
- R(H)
- Vars
- S(a);N_GUARD::QAB1(B),XS(a)
- S(a);N_GUARD::QAB1(B)
- Refutation
- S(i);XR(H)
- Try
- Q(B);
- Vars
- P(e);OGATE::R(G)
- S(a);N_GUARD::QAB1(B)
- S(a);N_GUARD::QAB1(B),XS(a)
- P(f);OGATE::R(H)
- Refutation
- P(c);XQ(B)
- Try
- Q(B);
- Vars
- S(a);N_GUARD::QAB1(B),XS(a)
- P(e);OGATE::R(G)
- S(a);N_GUARD::QAB1(B)
- P(f);OGATE::R(H)
- Refutation
- S(a);XQ(B)
- Try
- Q(B);
- Vars
- K(d);P-FLIGHT,XB(E)::S(C)
- S(a);N_GUARD::QAB1(B)
- S(a);N_GUARD::QAB1(B),XS(a)
- P(f);SBLOCK::QAR(B)+S(C)
- Refutation
- P(e);
- Try
- Actual
- S(F);
- Vars
- P(e);N_GUARD::S(F)
- S(a);N_GUARD::R(H)
- S(a);OGATE,SBLOCK::QAB(B)
- S(a);N_GUARD::R(H),XS(a)
- P(f);N_GUARD::S(F)
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).