MESON Chess Problem Database
Problem Display
PID: 203239 (8/3n4/8/Q7/b7/kp6/8/1K1B4 w - - 0 1)
Lester, William Edward
Chess Amateur (The), 1924
#2
3 + 4
| 6490 | yacpdb | 2020 |
| 5454 | Near Snap | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Sc5
- 2.Qxc5#
- 1...Se5
- 2.Qc5#
- 1...Sb6
- 2.Qc5#
- 1...Sf6
- 2.Qc5#
- 1...Sb8
- 2.Qc5#
- 1...Sf8
- 2.Qc5#
- 1...b2
- 2.Qxa4#
- 1...Sc5
- Tries
- 1.Ka1?
- 1...Sc5
- 2.Qxc5#
- 1...Se5
- 2.Qc5#
- 1...Sb6
- 2.Qc5#
- 1...Sf6
- 2.Qc5#
- 1...Sb8
- 2.Qc5#
- 1...Sf8
- 2.Qc5#
- 1...b2+!
- 1...Sc5
- 1.Bc2?
- 1...Sc5
- 2.Qxc5#
- 1...Se5
- 2.Qc5#
- 1...Sb6
- 2.Qc5#
- 1...Sf6
- 2.Qc5#
- 1...Sb8
- 2.Qc5#
- 1...Sf8
- 2.Qc5#
- 1...b2
- 2.Qxa4#
- 1...bxc2+!
- 1...Sc5
- 1.Be2?
- 1...Sc5
- 2.Qxc5#
- 1...Se5
- 2.Qc5#
- 1...Sb6
- 2.Qc5#
- 1...Sf6
- 2.Qc5#
- 1...Sb8
- 2.Qc5#
- 1...Sf8
- 2.Qc5#
- 1...b2!
- 1...Sc5
- 1.Bf3?
- 1...Sc5
- 2.Qxc5#
- 1...Se5
- 2.Qc5#
- 1...Sb6
- 2.Qc5#
- 1...Sf6
- 2.Qc5#
- 1...Sb8
- 2.Qc5#
- 1...Sf8
- 2.Qc5#
- 1...b2!
- 1...Sc5
- 1.Bg4?
- 1...Sc5
- 2.Qxc5#
- 1...Se5
- 2.Qc5#
- 1...Sb6
- 2.Qc5#
- 1...Sf6
- 2.Qc5#
- 1...Sb8
- 2.Qc5#
- 1...Sf8
- 2.Qc5#
- 1...b2!
- 1...Sc5
- 1.Bh5?
- 1...Sc5
- 2.Qxc5#
- 1...Se5
- 2.Qc5#
- 1...Sb6
- 2.Qc5#
- 1...Sf6
- 2.Qc5#
- 1...Sb8
- 2.Qc5#
- 1...Sf8
- 2.Qc5#
- 1...b2!
- 1...Sc5
- 1.Qb5?
- 1...Sc5
- 2.Qxc5#
- 1...Se5
- 2.Qc5#
- 1...Sb6
- 2.Qc5#
- 1...Sf6
- 2.Qc5#
- 1...Sb8
- 2.Qc5#
- 1...Sf8
- 2.Qc5#
- 1...b2
- 2.Qxa4#
- 2.Qxb2#
- 1...Bxb5!
- 1...Sc5
- 1.Qa7?
- 1...Sc5
- 2.Qxc5#
- 1...Se5
- 2.Qc5#
- 2.Qe7#
- 1...Sb6
- 2.Qe7#
- 1...Sf6
- 2.Qc5#
- 2.Qe7#
- 1...Sb8
- 2.Qc5#
- 2.Qe7#
- 1...Sf8
- 2.Qc5#
- 2.Qe7#
- 1...b2
- 2.Qxa4#
- 1...Kb4!
- 1...Sc5
- 1.Ka1?
- Keys
- 1.Qc3!
- 1...Bb5
- 2.Qxb3#
- 1...Bc6
- 2.Qxb3#
- 1...Sc5
- 2.Qxc5#
- 1...Se5
- 2.Qc5#
- 1...Sb6
- 2.Qc5#
- 1...Sf6
- 2.Qc5#
- 1...Sb8
- 2.Qc5#
- 1...Sf8
- 2.Qc5#
- 1...Bb5
- 1.Qc3!
This anticipates 209320(1984)
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- S(d);N_GUARD::QAB(C),XS(d)
- S(d);N_GUARD::QAB(C)
- P(b);::QAR1(C),XB(c)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- S(d);N_GUARD::QAB(C),XS(d)
- S(d);N_GUARD::QAB(C)
- Refutation
- P(b);CHECK
- Try
- B(B);
- Vars
- S(d);N_GUARD::QAB(C),XS(d)
- S(d);N_GUARD::QAB(C)
- P(b);::QAR1(C),XB(c)
- Refutation
- P(b);CHECK,XB(B)
- Try
- B(B);
- Vars
- S(d);N_GUARD::QAB(C),XS(d)
- S(d);N_GUARD::QAB(C)
- Refutation
- P(b);
- Try
- B(B);
- Vars
- S(d);N_GUARD::QAB(C),XS(d)
- S(d);N_GUARD::QAB(C)
- Refutation
- P(b);
- Try
- B(B);
- Vars
- S(d);N_GUARD::QAB(C),XS(d)
- S(d);N_GUARD::QAB(C)
- Refutation
- P(b);
- Try
- B(B);
- Vars
- S(d);N_GUARD::QAB(C),XS(d)
- S(d);N_GUARD::QAB(C)
- Refutation
- P(b);
- Try
- Q(C);N_PINB(c)
- Vars
- S(d);N_GUARD::QAB(C),XS(d)
- S(d);N_GUARD::QAB(C)
- Refutation
- B(c);XQ(C)
- Try
- Q(C);
- Vars
- S(d);N_GUARD::QAB(C),XS(d)
- S(d);OGATE::QAB(C)
- P(b);::QAR1(C),XB(c)
- Refutation
- K(a);N_SPINB(c),S_FLIGHT
- Try
- Actual
- Q(C);N_PINB(c),P_PINP(b)
- Vars
- B(c);N_GUARD::QAR1(C),XP(b)
- S(d);N_GUARD::QAB(C),XS(d)
- S(d);N_GUARD::QAB(C)
Developed and maintained by Brian Stephenson.
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