MESON Chess Problem Database
Problem Display
PID: 10792 (8/8/8/2p1Q3/2B1nB2/2P3p1/K1k2nN1/3N2R1 w - - 0 1)
Hoffmann, Fritz
Problem (Zagreb), 1968
#2
8 + 5
SOLUTION
- SOUND
- Sets
- 1...Sxd1
- 2.Se1#
- 1...Sh1
- 2.Qxe4#
- 1...Sd3
- 2.Bb3#
- 1...Sh3
- 2.Qxe4#
- 1...Sg4
- 2.Qxe4#
- 1...Sd2
- 2.Sde3#
- 1...Sxc3+
- 2.Qxc3#
- 1...Sg5
- 2.Qe2#
- 1...Sd6
- 2.Qe2#
- 1...Sf6
- 2.Qe2#
- 1...Sxd1
- Tries
- 1.Ka1?
- 1...Sxd1
- 2.Se1#
- 1...Sxc3
- 2.Qxc3#
- 1...Sd2
- 2.Sde3#
- 1...Sh1
- 2.Qxe4#
- 1...Sh3
- 2.Qxe4#
- 1...Sg4
- 2.Qxe4#
- 1...Sg5
- 2.Qe2#
- 1...Sd6
- 2.Qe2#
- 1...Sf6
- 2.Qe2#
- 1...Sd3!
- 1...Sxd1
- 1.Sb2?
- threat
- 2.Se1#
- 2.Bb3#
- 2.Rc1#
- 1...Sd1
- 2.Se1#
- 2.Bb3#
- 2.Bd3#
- 1...Sd3
- 2.Bb3#
- 2.Bxd3#
- 1...Sd2
- 2.Se3#
- 1...Sxc3+!
- threat
- 1.Sxf2?
- threat
- 2.Se1#
- 2.Bb3#
- 2.Bd3#
- 2.Rc1#
- 1...Sxf2
- 2.Rc1#
- 1...gxf2
- 2.Rc1#
- 1...Sd2
- 2.Se3#
- 2.Bd3#
- 1...Sxc3+!
- threat
- 1.Be2?
- threat
- 2.Se1#
- 1...Sxc3+
- 2.Qxc3#
- 1...Sd2
- 2.Sde3#
- 1...Sd3!
- threat
- 1.Bb5?
- 1...Sxc3+
- 2.Qxc3#
- 1...Sxd1
- 2.Se1#
- 1...Sd2
- 2.Sde3#
- 1...Sd3
- 2.Ba4#
- 1...Sh1
- 2.Qxe4#
- 1...Sh3
- 2.Qxe4#
- 1...Sg4
- 2.Qxe4#
- 1...Sg5
- 2.Qe2#
- 1...Sd6
- 2.Qe2#
- 1...Sf6
- 2.Qe2#
- 1...c4!
- 1...Sxc3+
- 1.Bg5?
- 1...Sxc3+
- 2.Qxc3#
- 1...Sxd1
- 2.Se1#
- 1...Sd2
- 2.Sde3#
- 1...Sd3
- 2.Bb3#
- 1...Sh1
- 2.Qxe4#
- 1...Sh3
- 2.Qxe4#
- 1...Sg4
- 2.Qxe4#
- 1...Sd6
- 2.Qe2#
- 1...Sf6
- 2.Qe2#
- 1...Sxg5!
- 1...Sxc3+
- 1.Bh6?
- 1...Sxc3+
- 2.Qxc3#
- 1...Sxd1
- 2.Se1#
- 1...Sd2
- 2.Sde3#
- 1...Sd3
- 2.Bb3#
- 1...Sh1
- 2.Qxe4#
- 1...Sh3
- 2.Qxe4#
- 1...Sg4
- 2.Qxe4#
- 1...Sd6
- 2.Qe2#
- 1...Sf6
- 2.Qe2#
- 1...Sg5!
- 1...Sxc3+
- 1.Re1?
- 1...Sxc3+
- 2.Qxc3#
- 1...Sd2
- 2.Sde3#
- 1...Sd3
- 2.Bb3#
- 1...Sh1
- 2.Qxe4#
- 1...Sh3
- 2.Qxe4#
- 1...Sg4
- 2.Qxe4#
- 1...Sg5
- 2.Qe2#
- 1...Sd6
- 2.Qe2#
- 1...Sf6
- 2.Qe2#
- 1...Sxd1!
- 1...Sxc3+
- 1.Rh1?
- 1...Sxc3+
- 2.Qxc3#
- 1...Sxd1
- 2.Se1#
- 1...Sd2
- 2.Sde3#
- 1...Sd3
- 2.Bb3#
- 1...Sh3
- 2.Qxe4#
- 1...Sg4
- 2.Qxe4#
- 1...Sg5
- 2.Qe2#
- 1...Sd6
- 2.Qe2#
- 1...Sf6
- 2.Qe2#
- 1...Sxh1!
- 1...Sxc3+
- 1.Qd4?
- threat
- 2.Sde3#
- 2.Se1#
- 2.Bb3#
- 1...Sxc3+
- 2.Qxc3#
- 1...Sxd1
- 2.Se1#
- 2.Bb3#
- 2.Bd3#
- 2.Qd3#
- 1...Sd2
- 2.Sde3#
- 2.Qxd2#
- 1...Sd3
- 2.Bb3#
- 2.Bxd3#
- 2.Qxd3#
- 1...Sg4
- 2.Se1#
- 2.Bb3#
- 2.Bd3#
- 2.Qd3#
- 2.Qxe4#
- 1...cxd4!
- threat
- 1.Qb8?
- threat
- 2.Qb1#
- 2.Qb2#
- 2.Qb3#
- 1...Sxd1
- 2.Qb3#
- 1...Sd2
- 2.Qb2#
- 1...Sd3
- 2.Bb3#
- 2.Qb1#
- 2.Qb3#
- 1...Sxc3+!
- threat
- 1.Qxe4+?
- 1...Sd3
- 2.Bb3#
- 2.Bxd3#
- 2.Qxd3#
- 2.Qe2#
- 1...Sxe4!
- 1...Sd3
- 1.Qd5?
- threat
- 2.Se1#
- 2.Bb3#
- 1...Sxd1
- 2.Qd3#
- 1...Sd2
- 2.Qxd2#
- 1...Sd3
- 2.Bb3#
- 2.Bxd3#
- 2.Qxd3#
- 1...Sxc3+!
- threat
- 1.Qf5?
- 1...Sd3
- 2.Bb3#
- 1...Sh1
- 2.Qxe4#
- 1...Sh3
- 2.Qxe4#
- 1...Sg4
- 2.Qxe4#
- 1...Sxd1!
- 1...Sd3
- 1.Ka1?
- Keys
- 1.Rf1!
- 1...Sxc3+
- 2.Qxc3#
- 1...Sxd1
- 2.Se1#
- 1...Sd2
- 2.Sde3#
- 1...Sd3
- 2.Bb3#
- 1...Sh1
- 2.Qxe4#
- 1...Sh3
- 2.Qxe4#
- 1...Sg4
- 2.Qxe4#
- 1...Sg5
- 2.Qe2#
- 1...Sd6
- 2.Qe2#
- 1...Sf6
- 2.Qe2#
- 1...Sxc3+
- 1.Rf1!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(b);SBLOCK,XS(A)::S(D)
- S(b);N_GUARD::QAB(H),XS(d)
- S(b);SBLOCK::B(F)
- S(d);SBLOCK::S(A)
- S(d);CHECK,OGATE,XP(E)::QAR1(H),XS(d)
- S(d);OGATE::QAR2(H)
- Tries
- Try
- K(C);P-FLIGHT
- Vars
- S(b);SBLOCK,XS(A)::S(D)
- S(d);OGATE,XP(E)::QAR1(H),XS(d)
- S(d);SBLOCK::S(A)
- S(b);N_GUARD::QAB(H),XS(d)
- S(d);OGATE::QAR2(H)
- Refutation
- S(b);
- Try
- S(A);
- Threat
- DUALS(3)
- Vars
- S(d);SBLOCK::S(D)
- Refutation
- S(d);CHECK,XP(E)
- Try
- S(A);XS(b)
- Threat
- DUALS(4)
- Vars
- S(d);XS(A)::R1(B)
- P(c);XS(A)::R1(B)
- Refutation
- S(d);CHECK,XP(E)
- Try
- B(F);
- Threat
- S(D)
- Vars
- S(d);CHECK,OGATE,XP(E)::QAR1(H),XS(d)
- S(d);SBLOCK::S(A)
- Refutation
- S(b);
- Try
- B(F);
- Vars
- S(d);CHECK,OGATE,XP(E)::QAR1(H),XS(d)
- S(b);SBLOCK,XS(A)::S(D)
- S(d);SBLOCK::S(A)
- S(b);SBLOCK::B(F)
- S(b);N_GUARD::QAB(H),XS(d)
- S(d);OGATE::QAR2(H)
- Refutation
- P(e);
- Try
- B(G);
- Vars
- S(d);CHECK,OGATE,XP(E)::QAR1(H),XS(d)
- S(b);SBLOCK,XS(A)::S(D)
- S(d);SBLOCK::S(A)
- S(b);SBLOCK::B(F)
- S(b);N_GUARD::QAB(H),XS(d)
- S(d);OGATE::QAR2(H)
- Refutation
- S(d);XB(G)
- Try
- B(G);
- Vars
- S(d);CHECK,OGATE,XP(E)::QAR1(H),XS(d)
- S(b);SBLOCK,XS(A)::S(D)
- S(d);SBLOCK::S(A)
- S(b);SBLOCK::B(F)
- S(b);N_GUARD::QAB(H),XS(d)
- S(d);OGATE::QAR2(H)
- Refutation
- S(d);
- Try
- R(B);
- Vars
- S(d);CHECK,OGATE,XP(E)::QAR1(H),XS(d)
- S(d);SBLOCK::S(A)
- S(b);SBLOCK::B(F)
- S(b);N_GUARD::QAB(H),XS(d)
- S(d);OGATE::QAR2(H)
- Refutation
- S(b);XS(A)
- Try
- R(B);
- Vars
- S(d);CHECK,OGATE,XP(E)::QAR1(H),XS(d)
- S(b);SBLOCK,XS(A)::S(D)
- S(d);SBLOCK::S(A)
- S(b);SBLOCK::B(F)
- S(b);N_GUARD::QAB(H),XS(d)
- S(d);OGATE::QAR2(H)
- Refutation
- S(b);XR(B)
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- S(d);CHECK,OGATE,XP(E)::QAR1(H),XS(d)
- Refutation
- P(e);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- S(b);XS(A)::QAB1(H)
- S(d);::QAR1(H)
- Refutation
- S(d);CHECK,XP(E)
- Try
- Q(H);CHECK,XS(d)
- Refutation
- S(b);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD,XS(A)::QAB1(H)
- S(d);N_GUARD::QAR1(H),XS(d)
- Refutation
- S(d);CHECK,XP(E)
- Try
- Q(H);P_PINS(d)
- Vars
- S(b);N_SPINS(d),SBLOCK::B(F)
- S(b);N_GUARD::QAB(H),XS(d)
- Refutation
- S(b);XS(A)
- Try
- Actual
- R(B);
- Vars
- S(d);CHECK,OGATE,XP(E)::QAR1(H),XS(d)
- S(b);SBLOCK,XS(A)::S(D)
- S(d);SBLOCK::S(A)
- S(b);SBLOCK::B(F)
- S(b);N_GUARD::QAB(H),XS(d)
- S(d);OGATE::QAR2(H)
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).