MESON Chess Problem Database
Problem Display
PID: 107455 (5r2/4B3/1p6/1P4Rb/rn1k2N1/1Q3p2/5n2/4RK2 w - - 0 1)
Aschenazi, Marcel
2nd Prize, Bulletin Ouvrier des Echecs, 1954
#2
7 + 8
| 78 | Bulletin Ouvrier des Echecs | 1955 |
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rf6
- 2.Bxf6#
- 1...Ra8
- 2.Bf6#
- 1...Rb8
- 2.Bf6#
- 1...Rc8
- 2.Bf6#
- 1...Rd8
- 2.Bf6#
- 1...Rg8
- 2.Bf6#
- 1...Rh8
- 2.Bf6#
- 1...Bf7
- 2.Bf6#
- 1...Sa2
- 2.Rd5#
- 1...Sc2
- 2.Rd5#
- 1...Sd3
- 2.Rd5#
- 1...Sd5
- 2.Rxd5#
- 1...Sa6
- 2.Rd5#
- 1...Sc6
- 2.Rd5#
- 1...Rf6
- Tries
- 1.Se5?
- threat
- 2.Qc4#
- 1...Bf7
- 2.Sxf3#
- 1...Sa2
- 2.Sc6#
- 1...Sc2
- 2.Sc6#
- 1...Sbd3
- 2.Sc6#
- 1...Sd5
- 2.Sc6#
- 1...Sa6
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Rc8!
- threat
- 1.Bxb4?
- threat
- 2.Rd5#
- 2.Qd5#
- 2.Qc3#
- 1...Rxb4
- 2.Rd5#
- 1...Ra3
- 2.Rd5#
- 2.Qd5#
- 1...Rc8
- 2.Rd5#
- 2.Qd5#
- 1...Rd8
- 2.Qc3#
- 1...Bf7
- 2.Qc3#
- 1...Sd1
- 2.Rd5#
- 2.Qd5#
- 1...Se4
- 2.Rd5#
- 2.Qd5#
- 1...Rf5!
- threat
- 1.Rc1?
- threat
- 2.Rc4#
- 2.Qc4#
- 2.Qe3#
- 1...Ke4
- 2.Rc4#
- 2.Qc4#
- 2.Qe3#
- 1...Bxg4
- 2.Rc4#
- 1...Sxg4
- 2.Rc4#
- 1...Ra1
- 2.Qc4#
- 2.Qe3#
- 1...Ra3
- 2.Rc4#
- 2.Qc4#
- 1...Rf5
- 2.Qc4#
- 1...Rc8
- 2.Qe3#
- 1...Bf7
- 2.Qe3#
- 1...Sd1
- 2.Rc4#
- 2.Qc4#
- 1...Sfd3
- 2.Rc4#
- 2.Qc4#
- 1...Sa2
- 2.Qd5#
- 2.Qe3#
- 1...Sbd3
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sa6
- 2.Qd5#
- 2.Qe3#
- 1...Sc6
- 2.Qd5#
- 2.Qe3#
- 1...Sc2!
- threat
- 1.Re4+?
- 1...Kxe4
- 2.Qc4#
- 2.Qe3#
- 1...Sxe4!
- 1...Kxe4
- 1.Rc5?
- threat
- 2.Qc4#
- 2.Qc3#
- 2.Qe3#
- 1...Sxg4
- 2.Qc4#
- 2.Qc3#
- 1...Ra3
- 2.Qc4#
- 1...Bf7
- 2.Qc3#
- 2.Qe3#
- 1...Sd1
- 2.Qc4#
- 1...Sfd3
- 2.Qc4#
- 2.Qc3#
- 1...Se4
- 2.Qc4#
- 2.Qe3#
- 1...Sa2
- 2.Rd5#
- 2.Qd5#
- 2.Qe3#
- 1...Sc2
- 2.Rd5#
- 2.Qd5#
- 2.Qc3#
- 1...Sbd3
- 2.Rd5#
- 2.Qd5#
- 2.Qc3#
- 1...Sd5
- 2.Rxd5#
- 2.Qxd5#
- 1...Sa6
- 2.Rd5#
- 2.Qd5#
- 2.Qc3#
- 2.Qe3#
- 1...Sc6
- 2.Rd5#
- 2.Qd5#
- 2.Qc3#
- 2.Qe3#
- 1...bxc5!
- threat
- 1.Qb2+?
- 1...Kd3
- 2.Se5#
- 1...Kc4!
- 1...Kd3
- 1.Se5?
- Keys
- 1.Se3!
- threat
- 2.Qc4#
- 1...Ke4
- 2.Qc4#
- 1...Rf5
- 2.Sxf5#
- 1...Rc8
- 2.Sf5#
- 1...Bf7
- 2.Sf5#
- 1...Sa2
- 2.Sc2#
- 1...Sc2
- 2.Sxc2#
- 1...Sbd3
- 2.Sc2#
- 1...Sd5
- 2.Sc2#
- 1...Sa6
- 2.Sc2#
- 1...Sc6
- 2.Sc2#
- threat
- 1.Se3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 8
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- R(h);N_GUARD::B(G),XR(h)
- R(h);N_GUARD::B(G)
- B(f);S_CUTR(h)::B(G)
- S(d);N_GUARD::R1(F)
- S(d);N_GUARD::R1(F),XS(d)
- Tries
- Try
- S(D);
- Threat
- QAR1(C)
- Vars
- B(f);N_GUARD,S_CUTR(h)::S(D),XP(b)
- S(d);N_GUARD::S(D)
- S(d);N_GUARD::S(D),XS(d)
- Refutation
- R(h);
- Try
- B(G);XS(d)
- Threat
- DUALS(3)
- Vars
- R(c);XB(G)::R1(F)
- R(h);::QAB1(C)
- B(f);::QAB1(C)
- Refutation
- R(h);
- Try
- R(A);
- Threat
- DUALS(3)
- Vars
- B(f);XS(D)::R1(A)
- S(a);XS(D)::R1(A)
- R(h);::QAR1(C)
- R(h);::QAB1(C)
- B(f);::QAB1(C)
- S(d);N_GUARD,SBLOCK::QAR1(C)
- S(d);N_GUARD::QAR1(C),XS(d)
- Refutation
- S(d);
- Try
- R(A);CHECK
- Refutation
- S(a);XR(A)
- Try
- R(F);
- Threat
- DUALS(3)
- Vars
- R(c);::QAR1(C)
- S(a);::QAR1(C)
- Refutation
- P(g);XR(F)
- Try
- Q(C);CHECK
- Vars
- K(e);P-FLIGHT::S(D)
- Refutation
- K(e);P-FLIGHT
- Try
- Actual
- S(D);
- Threat
- QAR1(C)
- Vars
- K(e);P-FLIGHT::QAR2(C)
- R(h);N_GUARD::S(D),XR(h)
- R(h);N_GUARD::S(D)
- B(f);S_CUTR(h)::S(D)
- S(d);N_GUARD::S(D)
- S(d);N_GUARD::S(D),XS(d)
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