MESON Chess Problem Database
Problem Display
PID: 107107 (3B4/2r1r3/1N1k1N2/2nPn3/8/7Q/3b4/3K4 w - - 0 1)
Reiners, Joachim
Freie Presse, 1969
#2
6 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra7
- 2.Sc8#
- 1...Rb7
- 2.Sc8#
- 1...Rcd7
- 2.Sc8#
- 1...Rc8
- 2.Sxc8#
- 1...Red7
- 2.Se8#
- 1...Rf7
- 2.Se8#
- 1...Rg7
- 2.Se8#
- 1...Rh7
- 2.Se8#
- 1...Re8
- 2.Sxe8#
- 1...Sb3
- 2.Se4#
- 1...Scd3
- 2.Se4#
- 1...Sa4
- 2.Se4#
- 1...Se4
- 2.Sxe4#
- 1...Sa6
- 2.Se4#
- 1...Se6
- 2.Se4#
- 1...Sb7
- 2.Se4#
- 1...Scd7
- 2.Se4#
- 1...Sed3
- 2.Sc4#
- 1...Sf3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sg4
- 2.Sc4#
- 1...Sc6
- 2.Sc4#
- 1...Sg6
- 2.Sc4#
- 1...Sed7
- 2.Sc4#
- 1...Sf7
- 2.Sc4#
- 1...Ra7
- Tries
- 1.Qe6+?
- 1...Sxe6
- 2.Se4#
- 1...Rxe6!
- 1...Sxe6
- 1.Qh2?
- threat
- 2.Sc4#
- 1...Sb3
- 2.Se4#
- 1...Sd3
- 2.Se4#
- 1...Sa4
- 2.Se4#
- 1...Se4
- 2.Sxe4#
- 1...Sa6
- 2.Se4#
- 1...Se6
- 2.Se4#
- 1...Sb7
- 2.Se4#
- 1...Sd7
- 2.Se4#
- 1...Bf4!
- threat
- 1.Qa3?
- threat
- 2.Se4#
- 1...Sd3
- 2.Sc4#
- 1...Sf3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sg4
- 2.Sc4#
- 1...Sc6
- 2.Sc4#
- 1...Sg6
- 2.Sc4#
- 1...Sd7
- 2.Sc4#
- 1...Sf7
- 2.Sc4#
- 1...Bb4!
- threat
- 1.Qg3?
- threat
- 2.Sc4#
- 1...Sb3
- 2.Se4#
- 1...Sd3
- 2.Se4#
- 1...Sa4
- 2.Se4#
- 1...Se4
- 2.Sxe4#
- 1...Sa6
- 2.Se4#
- 1...Se6
- 2.Se4#
- 1...Sb7
- 2.Se4#
- 1...Sd7
- 2.Se4#
- 1...Bf4!
- threat
- 1.Qh6?
- threat
- 2.Se4#
- 2.Se8#
- 1...Sb3
- 2.Se4#
- 1...Scd3
- 2.Se4#
- 1...Sa4
- 2.Se4#
- 1...Se4
- 2.Sxe4#
- 1...Sa6
- 2.Se4#
- 1...Se6
- 2.Se4#
- 1...Sb7
- 2.Se4#
- 1...Scd7
- 2.Se4#
- 1...Sed3
- 2.Sc4#
- 1...Sf3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sg4
- 2.Sc4#
- 1...Sc6
- 2.Sc4#
- 1...Sg6
- 2.Sc4#
- 1...Sed7
- 2.Sc4#
- 1...Sf7
- 2.Sc4#
- 1...Re6
- 2.Se8#
- 1...Re8
- 2.Se4#
- 2.Sxe8#
- 1...Bxh6!
- threat
- 1.Qe6+?
- Keys
- 1.Qd7+!
- 1...Rcxd7
- 2.Sc8#
- 1...Rexd7
- 2.Se8#
- 1...Scxd7
- 2.Se4#
- 1...Sexd7
- 2.Sc4#
- 1...Rcxd7
- 1.Qd7+!
FEATURES
- Static
- TYPE = CHECKING_KEY
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 21
- Sets
- R(e);N_GUARD::S(D)
- R(e);N_GUARD::S(D),XR(e)
- R(f);N_GUARD::S(E)
- R(f);N_GUARD::S(E),XR(f)
- S(b);N_GUARD::S(E)
- S(b);N_GUARD::S(E),XS(b)
- S(c);N_GUARD::S(D)
- S(c);N_GUARD::S(D),XS(c)
- Tries
- Try
- Q(B);CHECK
- Vars
- S(b);XQ(B)::S(E)
- Refutation
- R(f);XQ(B)
- Try
- Q(B);P_PINS(c)
- Threat
- S(D)
- Vars
- S(b);N_GUARD::S(E)
- S(b);N_GUARD::S(E),XS(b)
- Refutation
- B(a);N_SPINS(c)
- Try
- Q(B);P_PINS(b)
- Threat
- S(E)
- Vars
- S(c);N_GUARD::S(D)
- S(c);N_GUARD::S(D),XS(c)
- Refutation
- B(a);N_SPINS(b)
- Try
- Q(B);P_PINS(c)
- Threat
- S(D)
- Vars
- S(b);N_GUARD::S(E)
- S(b);N_GUARD::S(E),XS(b)
- Refutation
- B(a);N_SPINS(c)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- S(b);::QAR(B)+S(E),DCHECK
- S(b);::QAR(B)+S(E),DCHECK,XS(b)
- S(b);::S(E)
- S(c);N_GUARD::S(D)
- S(c);N_GUARD::S(D),XS(c)
- R(f);::S(E)
- Refutation
- B(a);XQ(B)
- Try
- Actual
- Q(B);CHECK
- Vars
- R(e);XQ(B)::S(D)
- R(f);XQ(B)::S(E)
- S(b);XQ(B)::S(E)
- S(c);XQ(B)::S(D)
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