MESON Chess Problem Database
Problem Display
PID: 134263 (4RQ2/1p4p1/1rp1P1p1/2Nnk1P1/1nK5/p3p3/1pR5/BBN5 w - - 0 1)
Stojnic, Dragan
The Problemist, 2009
#2
10 + 11
| 4901 | Best Problems | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sa2
- 2.S1d3#
- 1...Sxc2
- 2.S1d3#
- 1...Sd3
- 2.S1xd3#
- 1...Sa6
- 2.S1d3#
- 1...Sa2
- Tries
- 1.Bxb2+?
- 1...Sc3
- 2.Bxc3#
- 1...axb2!
- 1...Sc3
- 1.Rd2?
- threat
- 2.Sd7#
- 1...Sf6
- 2.Qd6#
- 1...Sc2
- 2.S1d3#
- 1...Sd3
- 2.S1xd3#
- 1...Se7!
- threat
- 1.Rf2?
- threat
- 2.Sd7#
- 1...Se7
- 2.Qf4#
- 1...Sc2
- 2.S1d3#
- 1...Sd3
- 2.S1xd3#
- 1...Sf6!
- threat
- 1.Bxb2+?
- Keys
- 1.Rxb2!
- threat
- 2.Sd7#
- 1...Sf6
- 2.Rf2#
- 1...Se7
- 2.Rd2#
- 1...Sc2
- 2.S1d3#
- 1...Sd3
- 2.S1xd3#
- threat
- 1.Rxb2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- S(d);N_GUARD::S(C)
- S(d);N_GUARD,XR(D)::S(C)
- S(d);N_GUARD::S(C),XS(d)
- Tries
- Try
- B(A);CHECK,XP(a)
- Vars
- S(e);N_GUARD,P_SPINS(e)::B(A),XS(e)
- Refutation
- P(b);XB(A)
- Try
- R(D);
- Threat
- S(F)
- Vars
- S(e);::QAB1(J)
- S(d);N_GUARD::S(C)
- S(d);N_GUARD::S(C),XS(d)
- Refutation
- S(e);
- Try
- R(D);
- Threat
- S(F)
- Vars
- S(e);N_GUARD::QAB1(J)
- S(d);N_GUARD::S(C)
- S(d);N_GUARD::S(C),XS(d)
- Refutation
- S(e);
- Try
- Actual
- R(D);XP(a)
- Threat
- S(F)
- Vars
- S(e);N_GUARD::B(A)+R(D)
- S(d);N_GUARD::S(C)
- S(d);N_GUARD::S(C),XS(d)
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