MESON Chess Problem Database
Problem Display
PID: 18632 (4Rn2/2N5/5Qp1/2qp1p1r/Rbn2k1B/2p5/K1B4N/8 w - - 0 1)
Chandler, Guy Wills
HM., F Bennett Sp. Ty., 1957
#2
8 + 10
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.Sxd5#
- 1...Qf2
- 2.Sxd5#
- 1...Qe3
- 2.Sxd5#
- 1...Qd4
- 2.Qxd4#
- 1...Qb6
- 2.Sxd5#
- 1...Qd6
- 2.Qd4#
- 1...Qa7
- 2.Sxd5#
- 1...Qe7
- 2.Sxd5#
- 1...Qa5
- 2.Qd4#
- 1...Qb5
- 2.Qd4#
- 1...Qc6
- 2.Qd4#
- 1...Qxc7
- 2.Qd4#
- 1...Rxh4
- 2.Qxh4#
- 1...Rg5
- 2.Qxg5#
- 1...Rh6
- 2.Qg5#
- 1...Rh7
- 2.Qg5#
- 1...Rh8
- 2.Qg5#
- 1...Ba3
- 2.Qe5#
- 1...Ba5
- 2.Qe5#
- 1...Sb2
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sa3
- 2.Qe5#
- 1...Se3
- 2.Qe5#
- 1...Sa5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...d4
- 2.Re4#
- 1...g5
- 2.Qxf5#
- 1...Qg1
- Tries
- 1.Re1?
- 1...Qxc7
- 2.Qd4#
- 1...Rxh4
- 2.Qxh4#
- 1...Qg1
- 2.Sxd5#
- 1...Qf2
- 2.Sxd5#
- 1...Qe3
- 2.Sxd5#
- 1...Qd4
- 2.Qxd4#
- 1...Qb6
- 2.Sxd5#
- 1...Qd6
- 2.Qd4#
- 1...Qa7
- 2.Sxd5#
- 1...Qe7
- 2.Sxd5#
- 1...Qa5
- 2.Qd4#
- 1...Qb5
- 2.Qd4#
- 1...Qc6
- 2.Qd4#
- 1...Rg5
- 2.Qxg5#
- 1...Rh6
- 2.Qg5#
- 1...Rh7
- 2.Qg5#
- 1...Rh8
- 2.Qg5#
- 1...Ba3
- 2.Qe5#
- 1...Ba5
- 2.Qe5#
- 1...Sb2
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sa3
- 2.Qe5#
- 1...Sa5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...Se6
- 2.Sxe6#
- 1...Sd7
- 2.Se6#
- 1...Sh7
- 2.Se6#
- 1...d4
- 2.Re4#
- 1...g5
- 2.Qxf5#
- 1...Se3!
- 1...Qxc7
- 1.Re1?
- Keys
- 1.Re2!
- 1...Qxc7
- 2.Qd4#
- 1...Rxh4
- 2.Qxh4#
- 1...Qg1
- 2.Sxd5#
- 1...Qf2
- 2.Sxd5#
- 1...Qe3
- 2.Sxd5#
- 1...Qd4
- 2.Qxd4#
- 1...Qb6
- 2.Sxd5#
- 1...Qd6
- 2.Qd4#
- 1...Qa7
- 2.Sxd5#
- 1...Qe7
- 2.Sxd5#
- 1...Qa5
- 2.Qd4#
- 1...Qb5
- 2.Qd4#
- 1...Qc6
- 2.Qd4#
- 1...Rg5
- 2.Qxg5#
- 1...Rh6
- 2.Qg5#
- 1...Rh7
- 2.Qg5#
- 1...Rh8
- 2.Qg5#
- 1...Ba3
- 2.Qe5#
- 1...Ba5
- 2.Qe5#
- 1...Sb2
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sa3
- 2.Qe5#
- 1...Se3
- 2.Rf2#
- 1...Sa5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sb6
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...Se6
- 2.Sxe6#
- 1...Sd7
- 2.Se6#
- 1...Sh7
- 2.Se6#
- 1...d4
- 2.Re4#
- 1...g5
- 2.Qxf5#
- 1...Qxc7
- 1.Re2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- Q(e);N_GUARD::S(G),XP(f)
- Q(e);N_GUARD,P_PINB(B)::S(G),XP(f)
- Q(e);N_GUARD::QAR2(F),XQ(e)
- Q(e);N_GUARD::QAR2(F)
- Q(e);N_GUARD,P_PINR(D)::S(G),XP(f)
- Q(e);N_GUARD,P_PINR(D)::QAR2(F)
- Q(e);N_GUARD,XS(G)::QAR2(F)
- R(h);OGATE,XB(E)::QAR2(F),XR(h)
- R(h);N_GUARD::QAB1(F),XR(h)
- R(h);N_GUARD::QAB1(F)
- B(b);P_SPINS(c)::QAB1(F)
- S(c);N_GUARD,P_SPINB(b)::QAB1(F)
- S(c);N_GUARD,P_SPINB(b)::QAB1(F),XS(c)
- P(f);N_GUARD::R1(H)
- P(i);N_GUARD,S_CUTR(h)::QAR1(F),XP(g)
- Tries
- Try
- R(H);
- Vars
- Q(e);N_GUARD,XS(G)::QAR2(F)
- R(h);OGATE,XB(E)::QAR2(F),XR(h)
- Q(e);N_GUARD::S(G),XP(f)
- Q(e);N_GUARD,P_PINB(B)::S(G),XP(f)
- Q(e);N_GUARD::QAR2(F),XQ(e)
- Q(e);N_GUARD::QAR2(F)
- Q(e);N_GUARD,P_PINR(D)::S(G),XP(f)
- Q(e);N_GUARD,P_PINR(D)::QAR2(F)
- R(h);N_GUARD::QAB1(F),XR(h)
- R(h);N_GUARD::QAB1(F)
- B(b);P_SPINS(c)::QAB1(F)
- S(c);N_GUARD,P_SPINB(b)::QAB1(F)
- S(c);N_GUARD,P_SPINB(b)::QAB1(F),XS(c)
- S(j);N_GUARD::S(G),XS(j)
- S(j);N_GUARD::S(G)
- P(f);N_GUARD::R1(H)
- P(i);N_GUARD,S_CUTR(h)::QAR1(F),XP(g)
- Refutation
- S(c);P_SPINB(b)
- Try
- Actual
- R(H);
- Vars
- Q(e);N_GUARD,XS(G)::QAR2(F)
- R(h);OGATE,XB(E)::QAR2(F),XR(h)
- Q(e);N_GUARD::S(G),XP(f)
- Q(e);N_GUARD::QAR2(F),XQ(e)
- Q(e);N_GUARD::QAR2(F)
- Q(e);N_GUARD,P_PINR(D)::S(G),XP(f)
- Q(e);N_GUARD,P_PINR(D)::QAR2(F)
- R(h);N_GUARD::QAB1(F),XR(h)
- R(h);N_GUARD::QAB1(F)
- B(b);P_SPINS(c)::QAB1(F)
- S(c);N_GUARD,P_SPINB(b)::QAB1(F)
- S(c);P_SPINB(b),SBLOCK,S_CUTQ(e)::R(H)
- S(c);N_GUARD,P_SPINB(b)::QAB1(F),XS(c)
- S(j);N_GUARD::S(G),XS(j)
- S(j);N_GUARD::S(G)
- P(f);N_GUARD::R1(H)
- P(i);N_GUARD,S_CUTR(h)::QAR1(F),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).