MESON Chess Problem Database
Problem Display
PID: 261313 (r7/8/R3P3/1Q6/1KNBp1n1/3kP3/1P3qRr/bb1B4 w - - 0 1)
Mettler, Josef
Neue Zurcher Zeitung, 1986
#2
10 + 8
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qe1+
- 2.Sd2#
- 1...Qg1
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 1...Qg3
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 1...Qh4
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 1...Qf1
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 1...Qxb2+
- 2.Sxb2#
- 1...Qc2
- 2.Se5#
- 1...Qd2+
- 2.Sxd2#
- 1...Qf3
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 1...Qf4
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 1...Qf5
- 2.Se5#
- 1...Qf6
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 1...Qf7
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 1...Qf8+
- 2.Sd6#
- 1...Rb8
- 2.Ra3#
- 1...Rc8
- 2.Ra3#
- 1...Rd8
- 2.Ra3#
- 1...Re8
- 2.Ra3#
- 1...Rf8
- 2.Ra3#
- 1...Rg8
- 2.Ra3#
- 1...Rh8
- 2.Ra3#
- 1...Qe1+
- Tries
- 1.Ba7?
- threat
- 2.Ra3#
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Qe1+
- 2.Sd2#
- 1...Qxb2+
- 2.Sxb2#
- 1...Qd2+
- 2.Sxd2#
- 1...Qf8+
- 2.Sd6#
- 1...Qxe3
- 2.Sd2#
- 2.Sa3#
- 2.Sxe3#
- 2.Sa5#
- 2.Se5#
- 2.Sd6#
- 2.Ra3#
- 1...Rxa7
- 2.Rd6#
- 2.Qd5#
- 1...Sxe3
- 2.Ra3#
- 1...Qg3
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Se5#
- 2.Sd6#
- 2.Ra3#
- 2.Qd5#
- 1...Qc2
- 2.Se5#
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Qf4
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Se5#
- 2.Sd6#
- 2.Ra3#
- 2.Qd5#
- 1...Qf5
- 2.Se5#
- 2.Ra3#
- 1...Qf6
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Se5#
- 2.Sd6#
- 1...Qf7
- 2.Sd2#
- 2.Sa3#
- 2.Sa5#
- 2.Se5#
- 2.Sd6#
- 2.Ra3#
- 2.Rd6#
- 2.Qd5#
- 1...Rh5
- 2.Ra3#
- 1...Rh7
- 2.Ra3#
- 2.Rd6#
- 2.Qd5#
- 1...Rb8
- 2.Ra3#
- 2.Rd6#
- 1...Rd8
- 2.Ra3#
- 1...Ba2
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Bc2
- 2.Rd6#
- 2.Qd7#
- 2.Qd5#
- 1...Se5
- 2.Ra3#
- 2.Rd6#
- 2.Qd5#
- 1...Sf6
- 2.Ra3#
- 1...Bxb2!
- threat
- 1.Ba7?
- Keys
- 1.Qd5!
- threat
- 2.Bc3#
- 2.Bc5#
- 2.Be5#
- 2.Bb6#
- 2.Bf6#
- 2.Ba7#
- 2.Bg7#
- 2.Bh8#
- 1...Qe1+
- 2.Bc3#
- 1...Qxb2+
- 2.Bxb2#
- 1...Qd2+
- 2.Bc3#
- 1...Qf8+
- 2.Bc5#
- 1...Rb8+
- 2.Bb6#
- 1...Qxe3
- 2.Bxe3#
- 1...Bxb2
- 2.Bxb2#
- 2.Bc3#
- 1...Sxe3
- 2.Bxe3#
- 1...Qf5
- 2.Be5#
- 1...Qf6
- 2.Be5#
- 2.Bxf6#
- 1...Rh5
- 2.Be5#
- 1...Rhh8
- 2.Bc3#
- 2.Bc5#
- 2.Be5#
- 2.Bb6#
- 2.Bf6#
- 2.Ba7#
- 2.Bg7#
- 2.Bxh8#
- 1...Ra7
- 2.Bc3#
- 2.Bc5#
- 2.Be5#
- 2.Bb6#
- 2.Bf6#
- 2.Bxa7#
- 2.Bg7#
- 2.Bh8#
- 1...Rd8
- 2.Ra3#
- 1...Rah8
- 2.Bc3#
- 2.Bc5#
- 2.Be5#
- 2.Bb6#
- 2.Bf6#
- 2.Ba7#
- 2.Bg7#
- 2.Bxh8#
- 2.Ra3#
- 1...Se5
- 2.Bc3#
- 2.Bc5#
- 2.Bxe5#
- 2.Bb6#
- 2.Ba7#
- 1...Sf6
- 2.Bxf6#
- threat
- 1.Qd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 6
- ADDED MATES = 4
- REMOVED MATES = 6
- Sets
- Q(c);CHECK::QAB(H)+S(F)
- Q(c);CHECK,XP(B)::QAB(H)+S(F),DCHECK,XQ(c)
- Q(c);::QAB(H)+S(F),DCHECK
- Q(c);CHECK::QAB(H)+S(F),XQ(c)
- R(h);N_GUARD,P_PINQ(H)::R(I)
- R(h);N_GUARD::R(I)
- Tries
- Try
- B(G);
- Threat
- DUALS(4)
- Vars
- Q(c);CHECK::QAB(H)+S(F)
- Q(c);CHECK,XP(B)::QAB(H)+S(F),DCHECK,XQ(c)
- Q(c);CHECK::QAB(H)+S(F),XQ(c)
- S(g);XP(D)::R(I)
- R(d);::R(I)
- R(h);::R(I)
- S(g);::R(I)
- Refutation
- B(a);XP(B)
- Try
- Actual
- Q(H);
- Threat
- DUALS(8)
- Vars
- Q(c);CHECK::QAR(H)+B(G)
- Q(c);CHECK,OGATE,XP(B)::QAR(H)+B(G),XQ(c)
- R(h);CHECK::QAR(H)+B(G)
- Q(c);OGATE,XP(D)::QAR(H)+B(G),XQ(c)
- S(g);OGATE,XP(D)::QAR(H)+B(G),XS(g)
- Q(c);::QAR(H)+B(G)
- R(d);::QAR(H)+B(G)
- R(h);N_GUARD::R(I)
- S(g);::QAR(H)+B(G),XS(g)
Developed and maintained by Brian Stephenson.
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