MESON Chess Problem Database
Problem Display
PID: 139381 (6N1/1r4np/p1Ppp3/3BkPB1/5R2/3R4/K6n/1Q5r w - - 0 1)
Onkoud, Abdelaziz
8th HM., Rochade Europa, 2008-2009
#2
9 + 9
| 1106 | Rochade Europa | 2010 |
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Qxe1#
- 1...Rb2+
- 2.Qxb2#
- 1...Ra7
- 2.Qb2#
- 1...Rc7
- 2.Qb2#
- 1...Rd7
- 2.Qb2#
- 1...Re7
- 2.Qb2#
- 1...Rf7
- 2.Qb2#
- 1...Sxf5
- 2.Re4#
- 1...exd5
- 2.Re3#
- 1...Re1
- Tries
- 1.Sh6?
- threat
- 2.Re4#
- 1...Rb2+
- 2.Qxb2#
- 1...exd5
- 2.Re3#
- 1...Re1
- 2.Qxe1#
- 1...Rb4
- 2.Sf7#
- 1...exf5!
- threat
- 1.Se7?
- threat
- 2.Re3#
- 2.Re4#
- 1...Rb2+
- 2.Qxb2#
- 1...Rxe7
- 2.Qb2#
- 1...Sxf5
- 2.Re4#
- 1...exd5
- 2.Re3#
- 2.Rxd5#
- 1...exf5
- 2.Re3#
- 1...Re1
- 2.Qxe1#
- 1...Rb3
- 2.Re4#
- 1...Sf1
- 2.Re4#
- 1...Sg4
- 2.Re4#
- 1...Rb4!
- threat
- 1.Rdd4?
- threat
- 2.Bf6#
- 2.Qe4#
- 1...Rhxb1
- 2.Bf6#
- 1...Rbxb1
- 2.Bf6#
- 1...exd5
- 2.Bf6#
- 1...exf5
- 2.Bf6#
- 1...Re1
- 2.Bf6#
- 2.Qxe1#
- 1...Rf7
- 2.Qe4#
- 1...Sg4
- 2.Qe4#
- 1...Sh5
- 2.Qe4#
- 1...Se8
- 2.Qe4#
- 1...Rb2+!
- threat
- 1.Qa1+?
- 1...Rb2+
- 2.Qxb2#
- 1...Rxa1+!
- 1...Rb2+
- 1.Qc1?
- threat
- 2.Bf6#
- 2.Qe3#
- 2.Qc3#
- 1...Rb2+
- 2.Qxb2#
- 1...Sxf5
- 2.Bf6#
- 2.Re4#
- 1...exd5
- 2.Bf6#
- 2.Re3#
- 2.Qe3#
- 1...Rb4
- 2.Bf6#
- 1...Re1
- 2.Bf6#
- 2.Qxe1#
- 2.Qc3#
- 1...Rb3
- 2.Bf6#
- 2.Qe3#
- 1...Rf7
- 2.Qb2#
- 2.Qe3#
- 2.Qc3#
- 1...Sf1
- 2.Bf6#
- 2.Qc3#
- 1...Sf3
- 2.Bf6#
- 2.Qe3#
- 1...Sg4
- 2.Qc3#
- 1...Sh5
- 2.Qe3#
- 2.Qc3#
- 1...Se8
- 2.Qe3#
- 2.Qc3#
- 1...Rxc1!
- threat
- 1.Qxb7?
- threat
- 2.Qb2#
- 2.Qxg7#
- 1...Sxf5
- 2.Re4#
- 1...exd5
- 2.Re3#
- 2.Qxg7#
- 1...Rb1
- 2.Qxg7#
- 1...Rc1
- 2.Qxg7#
- 1...Sf3
- 2.Qxg7#
- 1...Sg4
- 2.Qb2#
- 1...Sh5
- 2.Qb2#
- 1...Se8
- 2.Qb2#
- 1...Ra1+!
- threat
- 1.Sh6?
- Keys
- 1.Sf6!
- threat
- 2.Re3#
- 1...Rb2+
- 2.Qxb2#
- 1...Sxf5
- 2.Re4#
- 1...Re1
- 2.Qxe1#
- 1...Rb3
- 2.Sd7#
- 1...Rb4
- 2.Sd7#
- 1...Sf1
- 2.Sg4#
- 1...Sg4
- 2.Sxg4#
- threat
- 1.Sf6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 6
- Sets
- R(a);N_GUARD::QAR(A),XR(a)
- R(g);CHECK,N_GUARD::QAB(A),XR(g)
- R(g);N_GUARD::QAB(A)
- S(h);SBLOCK,XP(F)::R1(D)
- P(f);SBLOCK,XB(E)::R(C)
- Tries
- Try
- S(I);
- Threat
- R1(D)
- Vars
- R(g);CHECK,N_GUARD::QAB(A),XR(g)
- P(f);SBLOCK,XB(E)::R(C)
- R(a);N_GUARD::QAR(A),XR(a)
- R(g);N_GUARD::S(I)
- Refutation
- P(f);XP(F)
- Try
- S(I);
- Threat
- DUALS(2)
- Vars
- R(g);CHECK,N_GUARD::QAB(A),XR(g)
- R(g);N_GUARD,XS(I)::QAB(A)
- S(h);XP(F)::R1(D)
- P(f);XP(F)::R(C)
- R(a);N_GUARD::QAR(A),XR(a)
- R(g);::R1(D)
- S(b);::R1(D)
- Refutation
- R(g);
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- R(a);XQ(A)::B(G)
- R(g);XQ(A)::B(G)
- P(f);XB(E)::B(G)
- P(f);XP(F)::B(G)
- R(g);::QAR1(A)
- S(b);::QAR1(A)
- S(h);::QAR1(A)
- Refutation
- R(g);CHECK
- Try
- Q(A);CHECK
- Vars
- R(g);CHECK,N_GUARD,P_SPINR(g)::QAB(A),XR(g)
- Refutation
- R(a);CHECK,XQ(A)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- R(g);CHECK,N_GUARD::QAB(A),XR(g)
- R(g);::B(G)
- S(b);::QAB(A)
- Refutation
- R(a);XQ(A)
- Try
- Q(A);XR(g)
- Threat
- DUALS(2)
- Vars
- S(h);SBLOCK,XP(F)::R1(D)
- R(a);::QAB(A),XS(h)
- S(b);::QAB(A),XS(h)
- S(b);::QAB(A)
- S(h);::QAB(A)
- Refutation
- R(a);CHECK
- Try
- Actual
- S(I);
- Threat
- R(C)
- Vars
- R(g);CHECK,N_GUARD::QAB(A),XR(g)
- S(h);SBLOCK,XP(F)::R1(D)
- R(a);N_GUARD::QAR(A),XR(a)
- R(g);N_GUARD::S(I)
- S(b);N_GUARD::S(I)
- S(b);N_GUARD::S(I),XS(b)
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