MESON Chess Problem Database
Problem Display
PID: 147897 (8/1K1P4/8/BRN1P3/P1kpB3/1p1p4/1Pnb3q/3Q4 w - - 0 1)
Onkoud, Abdelaziz
1st Prize, diagrammes, 2006
#2
10 + 7
| 23 | Die Schwalbe | 2012 |
SOLUTION
- SOUND
- Sets
- 1...Bc1
- 2.Qxd3#
- 1...Be1
- 2.Qxd3#
- 1...Bc3
- 2.Qxd3#
- 1...Be3
- 2.Qxd3#
- 1...Bb4
- 2.Qxd3#
- 1...Bf4
- 2.Qxd3#
- 1...Bxa5
- 2.Qxd3#
- 1...Bg5
- 2.Qxd3#
- 1...Bh6
- 2.Qxd3#
- 1...Se1
- 2.Qxb3#
- 1...Sa3
- 2.Qxb3#
- 1...Se3
- 2.Qxb3#
- 1...Sb4
- 2.Qxb3#
- 1...Bc1
- Tries
- 1.Sxb3?
- threat
- 2.Bd5#
- 1...Qxe5
- 2.Sxd2#
- 1...Qh1
- 2.Sxd2#
- 1...Se3
- 2.Rc5#
- 1...Sb4
- 2.Rc5#
- 1...Qg2!
- threat
- 1.Sa6?
- threat
- 2.Bd5#
- 2.Rc5#
- 1...Qh1
- 2.Rc5#
- 1...Qg2
- 2.Rc5#
- 1...Bb4
- 2.Bxd3#
- 2.Bd5#
- 2.Qxd3#
- 1...Se3
- 2.Rc5#
- 2.Qxb3#
- 1...Sb4
- 2.Rc5#
- 1...Qxe5!
- threat
- 1.Se6?
- threat
- 2.Bd5#
- 2.Rc5#
- 1...Bxa5
- 2.Bxd3#
- 2.Bd5#
- 2.Qxd3#
- 1...Qh1
- 2.Rc5#
- 1...Qg2
- 2.Rc5#
- 1...Bb4
- 2.Bxd3#
- 2.Bd5#
- 2.Qxd3#
- 1...Se3
- 2.Rc5#
- 2.Qxb3#
- 1...Sb4
- 2.Rc5#
- 1...Qxe5!
- threat
- 1.Qxc2+?
- 1...Bc3
- 2.Qxb3#
- 2.Qxd3#
- 1...bxc2
- 2.b3#
- 1...dxc2!
- 1...Bc3
- 1.Qf3?
- threat
- 2.Bxd3#
- 2.Bd5#
- 2.Qxd3#
- 2.Qf7#
- 1...Qxe5
- 2.Bxd3#
- 2.Qxd3#
- 1...Qg3
- 2.Bxd3#
- 2.Bd5#
- 2.Qf7#
- 1...Qf4
- 2.Bxd3#
- 2.Bd5#
- 2.Qxd3#
- 1...Qe2
- 2.Bd5#
- 2.Qf7#
- 1...Qf2
- 2.Bxd3#
- 2.Bd5#
- 2.Qxd3#
- 1...Qh3
- 2.Bxd3#
- 2.Bd5#
- 1...Qh5
- 2.Bxd3#
- 2.Bd5#
- 2.Qxd3#
- 1...Qh6
- 2.Bxd3#
- 2.Bd5#
- 2.Qxd3#
- 1...Qh7
- 2.Bd5#
- 2.Qxd3#
- 1...Be3
- 2.Bxd3#
- 2.Bd5#
- 2.Qf7#
- 1...Bf4
- 2.Bxd3#
- 2.Bd5#
- 2.Qxd3#
- 1...Se1
- 2.Bd5#
- 2.Qf7#
- 1...Se3
- 2.Bxd3#
- 1...Sb4!
- threat
- 1.d8Q?
- threat
- 2.Bxd3#
- 2.Bd5#
- 2.Qd5#
- 2.Qg8#
- 1...Qxe5
- 2.Bxd3#
- 1...Qg1
- 2.Bxd3#
- 2.Bd5#
- 2.Qd5#
- 1...Qg3
- 2.Bd5#
- 2.Qd5#
- 1...Qf4
- 2.Bxd3#
- 2.Bd5#
- 2.Qd5#
- 1...Qh1
- 2.Qd5#
- 2.Qg8#
- 1...Qe2
- 2.Bd5#
- 2.Qd5#
- 2.Qg8#
- 1...Qf2
- 2.Bxd3#
- 2.Bd5#
- 2.Qd5#
- 1...Qg2
- 2.Qd5#
- 1...Qh3
- 2.Bd5#
- 2.Qd5#
- 1...Qh5
- 2.Bxd3#
- 2.Bd5#
- 2.Qd5#
- 1...Qh6
- 2.Bxd3#
- 2.Bd5#
- 2.Qd5#
- 1...Qh8
- 2.Bxd3#
- 2.Bd5#
- 2.Qd5#
- 1...Se1
- 2.Bd5#
- 2.Qxb3#
- 2.Qd5#
- 2.Qg8#
- 1...Se3
- 2.Bxd3#
- 2.Qxb3#
- 1...Sb4
- 2.Qxb3#
- 1...Qh7+!
- threat
- 1.Sxb3?
- Keys
- 1.Sxd3!
- threat
- 2.Rc5#
- 1...Qxe5
- 2.Sxe5#
- 1...Bb4
- 2.Bd5#
- threat
- 1.Sxd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 12
- Sets
- B(b);OGATE::QAB1(A),XP(e)
- B(b);OGATE,XB(E)::QAB1(A),XP(e)
- S(a);OGATE::QAB1(A),XP(d)
- Tries
- Try
- S(G);XP(d)
- Threat
- B(D)
- Vars
- Q(c);N_GUARD,XP(H)::S(G),XB(b)
- Q(c);N_GUARD,P_PINB(D)::S(G),XB(b)
- S(a);::R1(F)
- Refutation
- Q(c);P_PINB(D)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- Q(c);P_PINB(D)::R1(F)
- S(a);::R1(F)
- Refutation
- Q(c);XP(H)
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- Q(c);P_PINB(D)::R1(F)
- S(a);::R1(F)
- Refutation
- Q(c);XP(H)
- Try
- Q(A);CHECK,XS(a)
- Vars
- P(d);OGATE,XQ(A)::P(B)
- Refutation
- P(e);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(4)
- Vars
- S(a);::B(D),XP(e)
- Refutation
- S(a);
- Try
- P(J);
- Threat
- DUALS(4)
- Vars
- Q(c);XP(H)::B(D),XP(e)
- Q(c);P_PINB(D)::QAB1(J)
- S(a);OGATE::QAB1(A),XP(d)
- Refutation
- Q(c);CHECK
- Try
- Actual
- S(G);XP(e)
- Threat
- R1(F)
- Vars
- Q(c);XP(H)::S(G),XQ(c)
- B(b);::B(D)
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