MESON Chess Problem Database
Problem Display
PID: 85243 (2nK1N2/3Q2p1/p4kpr/Rp3Np1/2B2np1/B2pp3/7q/8 w - - 0 1)
Ivunin, Alexey Vsevolodovich
Kirillov, Valery Afanasievich
Pletenev, Nikolai Alexeyevich
Sachsische Zeitung, 1989
(First published on Fri Jan 13 1989)
#2
7 + 13
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.Bb2#
- 1...Qg3
- 2.Bb2#
- 1...Qh1
- 2.Bb2#
- 1...Qb2
- 2.Bxb2#
- 1...Qh3
- 2.Bb2#
- 1...Qh4
- 2.Bb2#
- 1...Qh5
- 2.Bb2#
- 1...Se2
- 2.Qe6#
- 1...Sg2
- 2.Qe6#
- 1...Sh3
- 2.Qe6#
- 1...Sd5
- 2.Qe6#
- 1...Sh5
- 2.Qe6#
- 1...Se6+
- 2.Qxe6#
- 1...d2
- 2.Bb2#
- 1...e2
- 2.Bb2#
- 1...bxc4
- 2.Qxg7#
- 1...b4
- 2.Qd4#
- 2.Qf7#
- 2.Qxg7#
- 1...gxf5
- 2.Qd4#
- 1...Qg1
- Tries
- 1.Sxe3?
- threat
- 2.Sxg4#
- 2.Qd4#
- 1...Se6+
- 2.Qxe6#
- 1...bxc4
- 2.Sxg4#
- 1...Qg1
- 2.Bb2#
- 2.Qd4#
- 1...Qg3
- 2.Bb2#
- 2.Qd4#
- 1...Qb2
- 2.Sxg4#
- 2.Bxb2#
- 1...Qe2
- 2.Qd4#
- 1...Qg2
- 2.Qd4#
- 1...Qh3
- 2.Bb2#
- 2.Qd4#
- 1...Qh4
- 2.Bb2#
- 2.Qd4#
- 1...Qh5
- 2.Bb2#
- 2.Qd4#
- 1...Rh4
- 2.Qd4#
- 1...Se2
- 2.Sxg4#
- 2.Qe6#
- 1...Sg2
- 2.Sxg4#
- 2.Qe6#
- 1...Sh3
- 2.Sxg4#
- 2.Qe6#
- 1...Sd5
- 2.Sxg4#
- 2.Qe6#
- 1...Sh5
- 2.Sxg4#
- 2.Qe6#
- 1...Sd6
- 2.Sxg4#
- 2.Qe7#
- 1...g3
- 2.Sg4#
- 2.Qd4#
- 1...Ke5!
- threat
- 1.Bxd3?
- threat
- 2.Qxg7#
- 1...Se6+
- 2.Qxe6#
- 1...Ke5
- 2.Qd4#
- 1...Sxd3
- 2.Qe6#
- 1...gxf5
- 2.Qxf5#
- 1...Se7
- 2.Qxe7#
- 1...Sh5
- 2.Qe6#
- 1...Rh7!
- threat
- 1.Be6?
- threat
- 2.Qd4#
- 2.Qxg7#
- 1...Sxe6+
- 2.Qxe6#
- 1...Ke5
- 2.Qd4#
- 1...gxf5
- 2.Qd4#
- 1...Qb2
- 2.Bxb2#
- 2.Qxg7#
- 1...Rh7
- 2.Qd4#
- 1...Se2
- 2.Qxg7#
- 1...Sg2
- 2.Qxg7#
- 1...Sh3
- 2.Qxg7#
- 1...Sd5
- 2.Qxg7#
- 1...Sd6
- 2.Qxg7#
- 1...Se7
- 2.Qd4#
- 1...Sh5!
- threat
- 1.Rxb5?
- threat
- 2.Qd4#
- 2.Qf7#
- 2.Qxg7#
- 1...Se6+
- 2.Qxe6#
- 1...gxf5
- 2.Rxf5#
- 2.Qxf5#
- 2.Qd4#
- 2.Qf7#
- 1...Sd5
- 2.Qe6#
- 1...Qb2
- 2.Bxb2#
- 2.Qf7#
- 2.Qxg7#
- 1...Rh7
- 2.Qd4#
- 2.Qf7#
- 1...Se2
- 2.Qe6#
- 2.Qf7#
- 2.Qxg7#
- 1...Sg2
- 2.Qe6#
- 2.Qf7#
- 2.Qxg7#
- 1...Sh3
- 2.Qe6#
- 2.Qf7#
- 2.Qxg7#
- 1...Sh5
- 2.Qe6#
- 2.Qf7#
- 1...Sd6
- 2.Qe7#
- 2.Qxg7#
- 1...Se7
- 2.Bxe7#
- 2.Qd4#
- 2.Qxe7#
- 1...axb5!
- threat
- 1.Sxe3?
- Keys
- 1.Sg3!
- threat
- 2.Qd4#
- 1...Se6+
- 2.Qxe6#
- 1...Ke5
- 2.Qxg7#
- 1...Qxg3
- 2.Bb2#
- 1...bxc4
- 2.Se4#
- 1...Qb2
- 2.Bxb2#
- 1...Se2
- 2.Qe6#
- 1...Sd5
- 2.Qe6#
- 1...Sd6
- 2.Qe7#
- threat
- 1.Sg3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 11
- Sets
- Q(a);N_GUARD::B(A)
- Q(a);N_GUARD::B(A),XQ(a)
- S(d);N_GUARD::QAR1(E)
- S(d);CHECK,N_GUARD::QAR1(E),XS(d)
- P(b);S_CUTQ(a)::B(A)
- P(c);S_CUTQ(a)::B(A)
- P(f);XB(B)::QAB1(E),XP(l)
- P(j);SBLOCK,XS(D)::QAB(E)
- Tries
- Try
- S(D);XP(c)
- Threat
- DUALS(2)
- Vars
- S(d);CHECK,N_GUARD::QAR1(E),XS(d)
- P(f);XB(B)::S(D),XP(e)
- Q(a);::QAB(E)
- R(k);::QAB(E)
- Refutation
- K(i);P_SPINP(f),S_FLIGHT
- Try
- B(B);XP(b)
- Threat
- QAB1(E),XP(l)
- Vars
- S(d);CHECK,N_GUARD::QAR1(E),XS(d)
- K(i);P_SPINP(f),S_FLIGHT::QAB1(E)
- S(d);N_GUARD,XB(B)::QAR1(E)
- P(j);OGATE,XS(D)::QAR1(E),XP(j)
- S(m);N_GUARD::QAB1(E),XS(m)
- S(d);N_GUARD::QAR1(E)
- Refutation
- R(k);
- Try
- B(B);
- Threat
- DUALS(2)
- Vars
- S(d);CHECK,OGATE,XB(B)::QAR1(E),XS(d)
- K(i);P_SPINP(f),S_FLIGHT::QAB1(E)
- P(j);XS(D)::QAB(E)
- R(k);::QAB(E)
- S(d);::QAB1(E),XP(l)
- S(m);::QAB1(E),XP(l)
- S(m);::QAB(E)
- Refutation
- S(d);
- Try
- R(C);XP(f)
- Threat
- DUALS(3)
- Vars
- S(d);CHECK,N_GUARD::QAR1(E),XS(d)
- S(d);N_GUARD::QAR1(E)
- Refutation
- P(h);XR(C)
- Try
- Actual
- S(D);
- Threat
- QAB(E)
- Vars
- S(d);CHECK,N_GUARD::QAR1(E),XS(d)
- K(i);P_SPINP(f),S_FLIGHT::QAB(E),XP(l)
- Q(a);N_GUARD,XS(D)::B(A)
- P(f);XB(B)::S(D)
- Q(a);N_GUARD::B(A),XQ(a)
- S(d);N_GUARD::QAR1(E)
- S(m);N_GUARD::QAB1(E)
Developed and maintained by Brian Stephenson.
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