MESON Chess Problem Database
Problem Display
PID: 15965 (2q1Nrr1/1b5n/3P2p1/2b2kPp/R2PR3/1Q1B2n1/K3p3/2B1N3 w - - 0 1)
Hoffmann, Fritz
Wochenpost, 1989
#2
11 + 11
| 23 | Die Schwalbe | 2006 |
SOLUTION
- SOUND
- Sets
- 1...Qe6
- 2.Qxe6#
- 1...Qc6
- 2.Qe6#
- 1...Qc7
- 2.Qe6#
- 1...Qa8
- 2.Qe6#
- 1...Qb8
- 2.Qe6#
- 1...Qd8
- 2.Qe6#
- 1...Rg7
- 2.Sxg7#
- 1...Rh8
- 2.Sg7#
- 1...Bxd6
- 2.Sxd6#
- 1...Bd5
- 2.Qxd5#
- 1...Ba6
- 2.Qd5#
- 1...Sxg5
- 2.Rf4#
- 1...Qe6
- Tries
- 1.Bb1?
- threat
- 2.Qf3#
- 1...Bxd6
- 2.Sxd6#
- 1...Sxe4
- 2.Qh3#
- 1...Sxg5
- 2.Rf4#
- 1...Qe6
- 2.Qxe6#
- 1...Bd5
- 2.Qxd5#
- 1...Bxe4!
- threat
- 1.Bc2?
- threat
- 2.Qf3#
- 1...Bxd6
- 2.Sxd6#
- 1...Sxe4
- 2.Qh3#
- 1...Sxg5
- 2.Rf4#
- 1...Qe6
- 2.Qxe6#
- 1...Bd5
- 2.Qxd5#
- 1...Bxe4!
- threat
- 1.Bc4?
- threat
- 2.Qf3#
- 1...Kxe4
- 2.Bd3#
- 2.Qd3#
- 1...Bxd6
- 2.Sxd6#
- 1...Sxg5
- 2.Rf4#
- 1...Bxe4!
- threat
- 1.Bb5?
- threat
- 2.Qf3#
- 1...Kxe4
- 2.Bd3#
- 1...Bxd6
- 2.Sxd6#
- 1...Sxe4
- 2.Qh3#
- 1...Sxg5
- 2.Rf4#
- 1...Qe6
- 2.Qxe6#
- 1...Bd5
- 2.Qxd5#
- 1...Bxe4!
- threat
- 1.Rh4+?
- 1...Be4
- 2.Qd5#
- 1...Se4!
- 1...Be4
- 1.Bb1?
- Keys
- 1.Ba6!
- threat
- 2.Qf3#
- 1...Kxe4
- 2.Bd3#
- 1...Bxd6
- 2.Sxd6#
- 1...Bxe4
- 2.Bxc8#
- 1...Sxe4
- 2.Qh3#
- 1...Sxg5
- 2.Rf4#
- 1...Qe6
- 2.Qxe6#
- 1...Bd5
- 2.Qxd5#
- threat
- 1.Ba6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 8
- Sets
- Q(i);N_GUARD,P_PINQ(D)::QAB1(D),XQ(i)
- Q(i);N_GUARD::QAB1(D)
- Q(i);N_GUARD,P_PINR(F)::QAB1(D)
- R(k);N_GUARD::S(K),XR(k)
- R(k);N_GUARD::S(K)
- B(c);XP(J)::S(K),XB(c)
- B(g);N_GUARD,P_PINQ(D)::QAR2(D),XB(g)
- B(g);N_GUARD::QAR2(D)
- S(h);SBLOCK,XP(I)::B(E)+R(H),DCHECK
- Tries
- Try
- B(E);
- Threat
- QAR2(D)
- Vars
- B(c);XP(J)::S(K),XB(c)
- S(b);OGATE,P_SPINS(b),XR(H)::QAB(D)
- S(h);SBLOCK,XP(I)::B(E)+R(H),DCHECK
- Q(i);N_GUARD,P_PINQ(D)::QAB1(D),XQ(i)
- B(g);N_GUARD,P_PINQ(D)::QAR2(D),XB(g)
- Refutation
- B(g);P_SPINB(g),XR(H)
- Try
- B(E);
- Threat
- QAR2(D)
- Vars
- B(c);XP(J)::S(K),XB(c)
- S(b);OGATE,P_SPINS(b),XR(H)::QAB(D)
- S(h);SBLOCK,XP(I)::B(E)+R(H),DCHECK
- Q(i);N_GUARD,P_PINQ(D)::QAB1(D),XQ(i)
- B(g);N_GUARD,P_PINQ(D)::QAR2(D),XB(g)
- Refutation
- B(g);P_SPINB(g),XR(H)
- Try
- B(E);
- Threat
- QAR2(D)
- Vars
- B(c);XP(J)::S(K),XB(c)
- S(h);SBLOCK,XP(I)::R1(H)
- Refutation
- B(g);XR(H)
- Try
- B(E);
- Threat
- QAR2(D)
- Vars
- K(d);OGATEB,S_FLIGHT,XR(H)::B(E)
- B(c);XP(J)::S(K),XB(c)
- S(b);OGATE,SBLOCK,XR(H)::QAB(D)
- S(h);SBLOCK,XP(I)::R1(H)
- Q(i);N_GUARD,P_PINQ(D)::QAB1(D),XQ(i)
- B(g);N_GUARD,P_PINQ(D)::QAR2(D),XB(g)
- Refutation
- B(g);XR(H)
- Try
- R(H);CHECK
- Vars
- B(g);P_SPINB(g)::QAR2(D)
- Refutation
- S(b);P_SPINS(b)
- Try
- Actual
- B(E);
- Threat
- QAR2(D)
- Vars
- K(d);OGATEB,S_FLIGHT,XR(H)::B(E)
- B(c);XP(J)::S(K),XB(c)
- B(g);OGATE,SBLOCK,XR(H)::B(E),XQ(i)
- S(b);OGATE,SBLOCK,XR(H)::QAB(D)
- S(h);SBLOCK,XP(I)::R1(H)
- Q(i);N_GUARD,P_PINQ(D)::QAB1(D),XQ(i)
- B(g);N_GUARD,P_PINQ(D)::QAR2(D),XB(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).