MESON Chess Problem Database
Problem Display
PID: 10374 (1R6/1r6/4P3/r1P2B2/p1p1NpK1/1P2b2R/1Nk5/Q3B3 w - - 0 1)
Eliassen, Harald
2nd Prize, BCF 106. Ty., 1963-1964
#2
11 + 7
SOLUTION
- SOUND
- Sets
- 1...Rxc5
- 2.Sxc5#
- 1...Rxb3
- 2.Sc3#
- 1...Ra7
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...Rc7
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...Rd7
- 2.Sd6#
- 1...Re7
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...Rf7
- 2.Sf6#
- 1...Rg7+
- 2.Sg5#
- 1...Rh7
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...Bc1
- 2.Sd2#
- 2.Sf2#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 2.Rc3#
- 1...Bg1
- 2.Sd2#
- 2.Sf2#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 2.Rc3#
- 1...Bd2
- 2.Sxd2#
- 2.Sf2#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...Bf2
- 2.Sd2#
- 2.Sxf2#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 2.Rc3#
- 1...Bd4
- 2.Sd2#
- 2.Sf2#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...Bxc5
- 2.Sd2#
- 2.Sf2#
- 2.Sxc5#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 2.Rc3#
- 1...axb3
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...cxb3
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...c3
- 2.Sd2#
- 1...Rxc5
- Tries
- 1.Sxa4?
- threat
- 2.Sd2#
- 1...Rg7+
- 2.Sg5#
- 1...Kd3
- 2.Sg3#
- 2.Qd1#
- 1...Rxc5
- 2.Sexc5#
- 1...Rxb3
- 2.Sec3#
- 1...Rd7
- 2.Sd6#
- 1...Rf7
- 2.Sf6#
- 1...Bc1
- 2.Sf2#
- 1...Bd2
- 2.Sxd2#
- 2.Sf2#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...Kxb3!
- threat
- 1.Sxc4?
- threat
- 2.Sed2#
- 1...Rg7+
- 2.Sg5#
- 1...Kd3
- 2.Sg3#
- 2.Qd1#
- 1...Rxc5
- 2.Sxc5#
- 1...Rxb3
- 2.Sc3#
- 1...Rd7
- 2.Sed6#
- 1...Rf7
- 2.Sf6#
- 1...Bc1
- 2.Sf2#
- 1...Bd2
- 2.Sa3#
- 2.Sexd2#
- 2.Sf2#
- 2.Sg5#
- 2.Sed6#
- 2.Sf6#
- 1...Kxb3!
- threat
- 1.Rxe3?
- threat
- 2.Sd2#
- 2.Sf2#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 2.Rc3#
- 1...Rg7+
- 2.Sg5#
- 1...Rxc5
- 2.Sxc5#
- 2.Rc3#
- 1...Rxb3
- 2.Sc3#
- 2.Re2#
- 1...c3
- 2.Sd2#
- 2.Rxc3#
- 1...Rd7
- 2.Sd6#
- 2.Rc3#
- 1...Rf7
- 2.Sf6#
- 2.Re2#
- 2.Rc3#
- 1...fxe3!
- threat
- 1.Rxb7?
- threat
- 2.Sf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...Rxc5
- 2.Sxc5#
- 1...Bd2
- 2.Sxd2#
- 2.Sf2#
- 2.Sc3#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...Bf2
- 2.Sd2#
- 2.Sxf2#
- 2.Sc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 2.Rc3#
- 1...c3
- 2.Sd2#
- 2.Sf2#
- 2.Sxc3#
- 2.Sg3#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- 1...Rb5!
- threat
- 1.Sxa4?
- Keys
- 1.Sd1!
- threat
- 2.Sd2#
- 1...Rg7+
- 2.Sg5#
- 1...Kxb3
- 2.Qb2#
- 1...Kd3
- 2.Sg3#
- 1...Rxc5
- 2.Sxc5#
- 1...Rxb3
- 2.Sec3#
- 1...Rd7
- 2.Sd6#
- 1...Rf7
- 2.Sf6#
- 1...Bc1
- 2.Sef2#
- 1...Bd2
- 2.Sxd2#
- 2.Sef2#
- 2.Sg5#
- 2.Sd6#
- 2.Sf6#
- threat
- 1.Sd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- R(f);XP(H)::B(I)+S(F),XR(f)
- R(g);XP(D)::B(I)+S(F)
- R(g);::B(I)+S(F)
- R(g);CHECK::B(I)+S(F)
- P(d);SBLOCK::B(I)+S(F)
- Tries
- Try
- S(C);XP(c)
- Threat
- B(I)+S(F)
- Vars
- R(g);CHECK::B(I)+S(F)
- R(f);XP(H)::B(I)+S(F),XR(f)
- R(g);XP(D)::B(I)+S(F)
- R(g);::B(I)+S(F)
- B(b);::B(I)+S(F)
- Refutation
- K(a);P_SPINB(b),P_SPINR(g),S_FLIGHT,XP(D)
- Try
- S(C);XP(d)
- Threat
- B(I)+S(F)
- Vars
- R(g);CHECK::B(I)+S(F)
- R(f);XP(H)::B(I)+S(F),XR(f)
- R(g);XP(D)::B(I)+S(F)
- R(g);::B(I)+S(F)
- B(b);::B(I)+S(F)
- Refutation
- K(a);P_SPINB(b),P_SPINR(g),S_FLIGHT,XP(D)
- Try
- R(E);XB(b)
- Threat
- DUALS(7)
- Vars
- R(g);CHECK::B(I)+S(F)
- Refutation
- P(e);XR(E)
- Try
- R(K);XR(g)
- Threat
- DUALS(6)
- Vars
- R(f);XP(H)::B(I)+S(F),XR(f)
- Refutation
- R(f);
- Try
- Actual
- S(C);
- Threat
- B(I)+S(F)
- Vars
- R(g);CHECK::B(I)+S(F)
- K(a);P_SPINB(b),P_SPINR(g),S_FLIGHT,XP(D)::QAR1(A)
- K(a);P_SPINB(b),S_FLIGHT::B(I)+S(F)
- R(f);XP(H)::B(I)+S(F),XR(f)
- R(g);XP(D)::B(I)+S(F)
- R(g);::B(I)+S(F)
- B(b);::B(I)+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).