MESON Chess Problem Database
Problem Display
PID: 145414 (2R5/rp1p2RK/3kpBpp/2N3r1/q3pN2/p4n2/3p4/5Q2 w - - 0 1)
Keller, Michael
2nd Prize, Freie Presse, 2006
#2
7 + 13
| 23 | Die Schwalbe | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Sxe4#
- 2.Rxd7#
- 1...Qc2
- 2.Rxd7#
- 1...Qb3
- 2.Sxe4#
- 2.Rxd7#
- 1...Qb5
- 2.Sxe4#
- 1...Qb4
- 2.Rxd7#
- 1...Qc4
- 2.Rxd7#
- 1...Qd4
- 2.Rxd7#
- 1...Qa5
- 2.Sxe4#
- 2.Rxd7#
- 1...Qa6
- 2.Sxe4#
- 2.Rxd7#
- 1...Re5
- 2.Be7#
- 1...Ra5
- 2.Sxb7#
- 1...Ra6
- 2.Sxb7#
- 1...Ra8
- 2.Sxb7#
- 1...Sd4
- 2.Sxe4#
- 1...Se5
- 2.Be7#
- 1...e5
- 2.Be7#
- 1...Qd1
- Tries
- 1.Qc4?
- threat
- 2.Sxe4#
- 1...Qxc4
- 2.Rxd7#
- 1...Rxc5
- 2.Qxc5#
- 1...Qc2
- 2.Rxd7#
- 1...Re5
- 2.Be7#
- 1...e3
- 2.Se4#
- 1...Qc6!
- threat
- 1.Qb5?
- threat
- 2.Rxd7#
- 1...Qxb5
- 2.Sxe4#
- 1...Se5
- 2.Be7#
- 1...b6!
- threat
- 1.Qc4?
- Keys
- 1.Qa1!
- threat
- 2.Be7#
- 1...Qd4
- 2.Rxd7#
- 1...Sd4
- 2.Sxe4#
- threat
- 1.Qa1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 10
- Sets
- Q(d);N_GUARD::R1(E),XP(m)
- Q(d);N_GUARD::S(C),XP(e)
- R(f);SBLOCK::B(D)
- R(k);N_GUARD::S(C),XP(l)
- S(c);S_CUTQ(d)::S(C),XP(e)
- S(c);SBLOCK::B(D)
- P(h);SBLOCK::B(D)
- Tries
- Try
- Q(A);
- Threat
- S(C),XP(e)
- Vars
- Q(d);N_GUARD,XQ(A)::R1(E),XP(m)
- R(f);OGATE,XS(C)::QAB1(A),XR(f)
- Q(d);N_GUARD::R1(E),XP(m)
- R(f);SBLOCK::B(D)
- P(e);::S(C)
- Refutation
- Q(d);
- Try
- Q(A);
- Threat
- R1(E),XP(m)
- Vars
- Q(d);N_GUARD,XQ(A)::S(C),XP(e)
- S(c);SBLOCK::B(D)
- Refutation
- P(l);
- Try
- Actual
- Q(A);
- Threat
- B(D)
- Vars
- Q(d);N_GUARD::R1(E),XP(m)
- S(c);S_CUTQ(d)::S(C),XP(e)
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