MESON Chess Problem Database
Problem Display
PID: 2835 (8/1p6/1p6/1K2p3/1N1k4/8/1nQ2P2/8 w - - 0 1)
Berger, Johann Nepomuk
Source?, 1883
#2
4 + 5
| 2638 | White to Play | 1913 |
| 2681 | All Change Here! | 1919 |
| 3713 | Snap | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Sd1
- 2.Qd3#
- 2.Qc4#
- 1...Sd3
- 2.Qxd3#
- 2.Qc4#
- 1...Sa4
- 2.Qd3#
- 2.Qc4#
- 1...Sc4
- 2.Qd3#
- 2.Qxc4#
- 1...e4
- 2.Qxb2#
- 1...Sd1
- Tries
- 1.Qb1?
- 1...Sd3
- 2.Qxd3#
- 1...e4
- 2.Qxb2#
- 1...Sd1
- 2.Qd3#
- 1...Sa4
- 2.Qd3#
- 1...Sc4
- 2.Qd3#
- 1...Kc3!
- 1...Sd3
- 1.Qd1+?
- 1...Kc3
- 2.Sa2#
- 2.Sd5#
- 1...Ke4
- 2.Qg4#
- 1...Sd3
- 2.Qxd3#
- 1...Sxd1!
- 1...Kc3
- 1.Qb3?
- threat
- 2.Qe3#
- 1...Sd1
- 2.Qc4#
- 2.Qd3#
- 1...Sd3
- 2.Qc4#
- 2.Qxd3#
- 1...Sc4
- 2.Qxc4#
- 2.Qd3#
- 1...e4
- 2.Qxb2#
- 1...Ke4!
- threat
- 1.Qf5?
- 1...Sd1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sa4
- 2.Qd3#
- 1...Sc4
- 2.Qd3#
- 1...e4
- 2.Qf6#
- 1...Kc3!
- 1...Sd1
- 1.Qg6?
- 1...e4
- 2.Qf6#
- 2.Qg7#
- 1...Sd1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sa4
- 2.Qd3#
- 1...Sc4
- 2.Qd3#
- 1...Kc3!
- 1...e4
- 1.Qh7?
- 1...e4
- 2.Qg7#
- 2.Qh8#
- 1...Sd1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Sa4
- 2.Qd3#
- 1...Sc4
- 2.Qd3#
- 1...Kc3!
- 1...e4
- 1.Qc1?
- threat
- 2.Qe3#
- 1...Sd1
- 2.Qc4#
- 1...Sd3
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...e4
- 2.Qxb2#
- 1...Ke4!
- threat
- 1.Qd2+?
- 1...Sd3
- 2.Qxd3#
- 1...Ke4!
- 1...Sd3
- 1.Qe2?
- threat
- 2.Qe3#
- 1...e4
- 2.Qxb2#
- 1...Sd1
- 2.Qd3#
- 2.Qc4#
- 1...Sd3
- 2.Qxd3#
- 1...Sc4
- 2.Qd3#
- 2.Qxc4#
- 1...Kc3!
- threat
- 1.Qc6?
- 1...Sc4
- 2.Qxc4#
- 1...e4
- 2.Qf6#
- 1...Sd1
- 2.Qc4#
- 1...Sd3
- 2.Sc2#
- 2.Qc4#
- 1...Sa4
- 2.Qc4#
- 1...bxc6+!
- 1...Sc4
- 1.Qc7?
- 1...Sc4
- 2.Qxc4#
- 1...Sd1
- 2.Qc4#
- 1...Sd3
- 2.Qc4#
- 1...Sa4
- 2.Qc4#
- 1...e4
- 2.Qg7#
- 1...Ke4!
- 1...Sc4
- 1.Qb1?
- Keys
- 1.Qc8!
- 1...Ke4
- 2.Qg4#
- 1...Sc4
- 2.Qxc4#
- 1...Sd1
- 2.Qc4#
- 1...Sd3
- 2.Qc4#
- 1...Sa4
- 2.Qc4#
- 1...e4
- 2.Qh8#
- 1...Ke4
- 1.Qc8!
This anticipates 149154(0000)
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- P(c);SBLOCK::QAB(A),XS(a)
- Tries
- Try
- Q(A);
- Vars
- S(a);N_GUARD::QAR1(A),XS(a)
- P(c);SBLOCK::QAB(A),XS(a)
- S(a);N_GUARD::QAR1(A)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(A);CHECK
- Vars
- K(b);P-FLIGHT::QAR2(A)
- S(a);N_GUARD,P_SPINS(a)::QAR1(A),XS(a)
- Refutation
- S(a);XQ(A)
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- P(c);SBLOCK::QAB(A),XS(a)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(A);
- Vars
- S(a);N_GUARD::QAR1(A)
- S(a);N_GUARD::QAR1(A),XS(a)
- P(c);OGATEB,SBLOCK::QAB(A)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(A);
- Vars
- S(a);N_GUARD::QAR1(A)
- S(a);N_GUARD::QAR1(A),XS(a)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(A);
- Vars
- S(a);N_GUARD::QAR1(A)
- S(a);N_GUARD::QAR1(A),XS(a)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- S(a);N_GUARD::QAR1(A)
- S(a);N_GUARD::QAR1(A),XS(a)
- P(c);SBLOCK::QAB(A),XS(a)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(A);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAR1(A),XS(a)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- P(c);SBLOCK::QAB(A),XS(a)
- S(a);N_GUARD::QAR1(A),XS(a)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(A);
- Vars
- S(a);N_GUARD::QAR1(A),XS(a)
- P(c);OGATEB,SBLOCK::QAB(A)
- S(a);N_GUARD::QAR1(A)
- Refutation
- P(e);CHECK,XQ(A)
- Try
- Q(A);
- Vars
- S(a);N_GUARD::QAR1(A),XS(a)
- S(a);N_GUARD::QAR1(A)
- P(c);OGATEB,SBLOCK::QAB(A)
- Refutation
- K(b);P-FLIGHT
- Try
- Actual
- Q(A);
- Vars
- K(b);P-FLIGHT::QAR2(A)
- S(a);N_GUARD::QAR1(A),XS(a)
- S(a);N_GUARD::QAR1(A)
- P(c);OGATEB,SBLOCK::QAB(A)
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