MESON Chess Problem Database
Problem Display
PID: 202696 (8/3p4/2p2Q2/3k2p1/1p4P1/1K1BP3/8/8 w - - 0 1)
Jenkins, AF
The Observer, 1950
(First published on Sun Apr 9 1950)
#2
5 + 5
| 15239 | Valois Notebooks | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Kc5
- 2.Qd4#
- 1...c5
- 2.e4#
- 1...d6
- 2.Qf5#
- 1...Kc5
- Tries
- 1.Ka2?
- 1...Kc5
- 2.Qd4#
- 1...c5
- 2.e4#
- 1...d6
- 2.Qf5#
- 1...b3+!
- 1...Kc5
- 1.Kb2?
- 1...Kc5
- 2.Qd4#
- 1...c5
- 2.e4#
- 1...d6
- 2.Qf5#
- 1...b3!
- 1...Kc5
- 1.Kc2?
- 1...Kc5
- 2.Qd4#
- 1...c5
- 2.e4#
- 1...d6
- 2.Qf5#
- 1...b3+!
- 1...Kc5
- 1.Ka4?
- 1...Kc5
- 2.Qd4#
- 1...c5
- 2.e4#
- 1...d6
- 2.Qf5#
- 1...b3!
- 1...Kc5
- 1.Bb1?
- 1...c5
- 2.e4#
- 1...d6
- 2.Qf5#
- 1...Kc5!
- 1...c5
- 1.Bf1?
- 1...Kc5
- 2.Qd4#
- 1...c5
- 2.Bg2#
- 1...d6
- 2.Qf5#
- 1...Ke4!
- 1...Kc5
- 1.Bc2?
- 1...c5
- 2.e4#
- 1...d6
- 2.Qf5#
- 1...Kc5!
- 1...c5
- 1.Bc4+?
- 1...Kc5
- 2.Qd4#
- 1...Ke4!
- 1...Kc5
- 1.Bf5?
- threat
- 2.Qd4#
- 1...c5
- 2.e4#
- 1...Kc5!
- threat
- 1.Ba6?
- 1...Kc5
- 2.Qd4#
- 1...c5
- 2.Bb7#
- 1...d6
- 2.Qf5#
- 1...Ke4!
- 1...Kc5
- 1.Bg6?
- 1...c5
- 2.e4#
- 1...d6
- 2.Qf5#
- 1...Kc5!
- 1...c5
- 1.Bh7?
- 1...c5
- 2.e4#
- 1...d6
- 2.Qf5#
- 1...Kc5!
- 1...c5
- 1.Qe7?
- threat
- 2.Bc4#
- 2.Be4#
- 1...c5
- 2.Be4#
- 1...d6!
- threat
- 1.Ka2?
- Keys
- 1.Be2!
- 1...Ke4
- 2.Qd4#
- 1...Kc5
- 2.Qd4#
- 1...c5
- 2.Bf3#
- 1...d6
- 2.Qf5#
- 1...Ke4
- 1.Be2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(b);P-FLIGHT::QAB1(E)
- P(d);SBLOCK::P(C)
- P(e);SBLOCK::QAR2(E)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- K(b);P-FLIGHT::QAB1(E)
- P(d);SBLOCK::P(C)
- P(e);SBLOCK::QAR2(E)
- Refutation
- P(a);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- K(b);P-FLIGHT::QAB1(E)
- P(d);SBLOCK::P(C)
- P(e);SBLOCK::QAR2(E)
- Refutation
- P(a);
- Try
- K(A);S_FLIGHT
- Vars
- K(b);P-FLIGHT::QAB1(E)
- P(d);SBLOCK::P(C)
- P(e);SBLOCK::QAR2(E)
- Refutation
- P(a);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- K(b);P-FLIGHT::QAB1(E)
- P(d);SBLOCK::P(C)
- P(e);SBLOCK::QAR2(E)
- Refutation
- P(a);
- Try
- B(B);
- Vars
- P(d);SBLOCK::P(C)
- P(e);SBLOCK::QAR2(E)
- Refutation
- K(b);P-FLIGHT
- Try
- B(B);
- Vars
- K(b);P-FLIGHT::QAB1(E)
- P(d);SBLOCK::B(B)
- P(e);SBLOCK::QAR2(E)
- Refutation
- K(b);S_FLIGHT
- Try
- B(B);
- Vars
- P(d);SBLOCK::P(C)
- P(e);SBLOCK::QAR2(E)
- Refutation
- K(b);P-FLIGHT
- Try
- B(B);CHECK
- Vars
- K(b);P-FLIGHT::QAB1(E)
- Refutation
- K(b);S_FLIGHT
- Try
- B(B);
- Threat
- QAR1(E)
- Vars
- P(d);SBLOCK::P(C)
- Refutation
- K(b);P-FLIGHT
- Try
- B(B);
- Vars
- K(b);P-FLIGHT::QAB1(E)
- P(d);OGATEB,SBLOCK::B(B)
- P(e);SBLOCK::QAR2(E)
- Refutation
- K(b);S_FLIGHT
- Try
- B(B);
- Vars
- P(d);SBLOCK::P(C)
- P(e);SBLOCK::QAR2(E)
- Refutation
- K(b);P-FLIGHT
- Try
- B(B);
- Vars
- P(d);SBLOCK::P(C)
- P(e);SBLOCK::QAR2(E)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- P(d);::B(B)
- Refutation
- P(e);
- Try
- Actual
- B(B);
- Vars
- K(b);S_FLIGHT::QAR1(E)
- K(b);P-FLIGHT::QAB1(E)
- P(d);SBLOCK::B(B)
- P(e);SBLOCK::QAR2(E)
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