MESON Chess Problem Database
Problem Display
PID: 652 (2N5/8/4r3/1B1k4/N5Q1/8/Kn5B/8 w - - 0 1)
Bonner Feast, Frederick
British Chess Magazine, 1918
#2
6 + 3
| 3360 | Simple Two-move Themes | 1924 |
| 5501 | Chess Cameos | 1936 |
| 5454 | Near Snap | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Scb6#
- 1...Re2
- 2.Scb6#
- 1...Re3
- 2.Scb6#
- 1...Re4
- 2.Qd7#
- 1...Ra6
- 2.Se7#
- 1...Rb6
- 2.Scxb6#
- 2.Se7#
- 1...Rc6
- 2.Se7#
- 1...Rd6
- 2.Se7#
- 1...Rf6
- 2.Se7#
- 1...Rg6
- 2.Se7#
- 1...Rh6
- 2.Se7#
- 1...Re7
- 2.Scb6#
- 2.Sxe7#
- 1...Re8
- 2.Scb6#
- 1...Sd1
- 2.Qc4#
- 1...Sd3
- 2.Qc4#
- 1...Sxa4
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Re1
- Tries
- 1.Kxb2?
- threat
- 2.Qc4#
- 1...Re4
- 2.Qd7#
- 1...Rc6
- 2.Se7#
- 1...Re2+!
- threat
- 1.Bg3?
- 1...Sxa4
- 2.Qc4#
- 1...Re4
- 2.Qd7#
- 1...Re1
- 2.Scb6#
- 1...Re2
- 2.Scb6#
- 1...Re3
- 2.Scb6#
- 1...Ra6
- 2.Se7#
- 1...Rb6
- 2.Scxb6#
- 2.Se7#
- 1...Rc6
- 2.Se7#
- 1...Rd6
- 2.Se7#
- 1...Rf6
- 2.Se7#
- 1...Rg6
- 2.Se7#
- 1...Rh6
- 2.Se7#
- 1...Re7
- 2.Scb6#
- 2.Sxe7#
- 1...Re8
- 2.Scb6#
- 1...Sd1
- 2.Qc4#
- 1...Sd3
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Re5!
- 1...Sxa4
- 1.Bc7?
- 1...Sxa4
- 2.Qc4#
- 1...Re4
- 2.Qd7#
- 1...Re5
- 2.Scb6#
- 1...Re1
- 2.Scb6#
- 1...Re2
- 2.Scb6#
- 1...Re3
- 2.Scb6#
- 1...Ra6
- 2.Se7#
- 1...Rb6
- 2.Scxb6#
- 2.Se7#
- 1...Rc6
- 2.Se7#
- 1...Rf6
- 2.Se7#
- 1...Rg6
- 2.Se7#
- 1...Rh6
- 2.Se7#
- 1...Re7
- 2.Scb6#
- 2.Sxe7#
- 1...Re8
- 2.Scb6#
- 1...Sd1
- 2.Qc4#
- 1...Sd3
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Rd6!
- 1...Sxa4
- 1.Bb8?
- 1...Sxa4
- 2.Qc4#
- 1...Re4
- 2.Qd7#
- 1...Re5
- 2.Scb6#
- 1...Re1
- 2.Scb6#
- 1...Re2
- 2.Scb6#
- 1...Re3
- 2.Scb6#
- 1...Ra6
- 2.Se7#
- 1...Rb6
- 2.Scxb6#
- 2.Se7#
- 1...Rc6
- 2.Se7#
- 1...Rf6
- 2.Se7#
- 1...Rg6
- 2.Se7#
- 1...Rh6
- 2.Se7#
- 1...Re7
- 2.Scb6#
- 2.Sxe7#
- 1...Re8
- 2.Scb6#
- 1...Sd1
- 2.Qc4#
- 1...Sd3
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Rd6!
- 1...Sxa4
- 1.Bc6+?
- 1...Rxc6
- 2.Se7#
- 1...Kxc6!
- 1...Rxc6
- 1.Qf5+?
- 1...Re5
- 2.Qxe5#
- 1...Kd4!
- 1...Re5
- 1.Qxe6+?
- 1...Kd4
- 2.Bg1#
- 2.Qe5#
- 1...Kxe6!
- 1...Kd4
- 1.Kxb2?
- Keys
- 1.Ba6!
- 1...Kc6
- 2.Qxe6#
- 1...Rxa6
- 2.Se7#
- 1...Sxa4
- 2.Qc4#
- 1...Re4
- 2.Qd7#
- 1...Re5
- 2.Bb7#
- 1...Re1
- 2.Bb7#
- 1...Re2
- 2.Bb7#
- 1...Re3
- 2.Bb7#
- 1...Rb6
- 2.Se7#
- 1...Rc6
- 2.Se7#
- 1...Rd6
- 2.Se7#
- 1...Rf6
- 2.Se7#
- 1...Rg6
- 2.Se7#
- 1...Rh6
- 2.Se7#
- 1...Re7
- 2.Sxe7#
- 1...Re8
- 2.Bb7#
- 1...Sd1
- 2.Qc4#
- 1...Sd3
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Kc6
- 1.Ba6!
This anticipates 653(1918)
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- R(c);N_GUARD::S(F)
- R(c);OGATE,SBLOCK::QAR2(D)
- R(c);N_GUARD,P_PINS(C)::S(F)
- S(a);N_GUARD::QAB1(D)
- S(a);N_GUARD,XS(C)::QAB1(D)
- S(a);N_GUARD::QAB1(D),XS(a)
- Tries
- Try
- K(A);P-FLIGHT,XS(a)
- Threat
- QAB1(D)
- Vars
- R(c);OGATE,SBLOCK::QAR2(D)
- R(c);N_GUARD::S(F)
- Refutation
- R(c);CHECK
- Try
- B(B);
- Vars
- S(a);N_GUARD,XS(C)::QAB1(D)
- R(c);OGATE,SBLOCK::QAR2(D)
- R(c);N_GUARD::S(F)
- R(c);N_GUARD,P_PINS(C)::S(F)
- S(a);N_GUARD::QAB1(D)
- S(a);N_GUARD::QAB1(D),XS(a)
- Refutation
- R(c);
- Try
- B(B);
- Vars
- S(a);N_GUARD,XS(C)::QAB1(D)
- R(c);OGATE,SBLOCK::QAR2(D)
- R(c);N_GUARD::S(F)
- R(c);N_GUARD,P_PINS(C)::S(F)
- S(a);N_GUARD::QAB1(D)
- S(a);N_GUARD::QAB1(D),XS(a)
- Refutation
- R(c);
- Try
- B(B);
- Vars
- S(a);N_GUARD,XS(C)::QAB1(D)
- R(c);OGATE,SBLOCK::QAR2(D)
- R(c);N_GUARD::S(F)
- R(c);N_GUARD,P_PINS(C)::S(F)
- S(a);N_GUARD::QAB1(D)
- S(a);N_GUARD::QAB1(D),XS(a)
- Refutation
- R(c);
- Try
- B(E);CHECK
- Vars
- R(c);XB(E)::S(F)
- Refutation
- K(b);S_FLIGHT,XB(E)
- Try
- Q(D);CHECK
- Vars
- R(c);N_GUARD,P_SPINR(c)::QAR1(D),XR(c)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(D);CHECK,XR(c)
- Refutation
- K(b);S_FLIGHT,XQ(D)
- Try
- Actual
- B(E);
- Vars
- K(b);S_FLIGHT::QAR2(D),XR(c)
- R(c);N_GUARD,P_PINS(C),XB(E)::S(F)
- S(a);N_GUARD,XS(C)::QAB1(D)
- R(c);OGATE,SBLOCK::QAR2(D)
- R(c);N_GUARD::B(E)
- R(c);N_GUARD::S(F)
- R(c);N_GUARD::S(F),XR(c)
- S(a);N_GUARD::QAB1(D)
- S(a);N_GUARD::QAB1(D),XS(a)
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