MESON Chess Problem Database
Problem Display
PID: 178514 (qn2B3/Rr3NK1/3PkB2/r1n5/4p3/p3N1b1/8/Q2R4 w - - 0 1)
Ellerman, Arnoldo
3rd Prize, Bulletin Ouvrier des Echecs, 1950
#2
9 + 9
| 78 | Bulletin Ouvrier des Echecs | 1952 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Sg5#
- 2.Sd8#
- 2.Re7#
- 1...Rb2
- 2.Sg5#
- 2.Sd8#
- 2.Re7#
- 1...Rb3
- 2.Sg5#
- 2.Sd8#
- 2.Re7#
- 1...Rb4
- 2.Sg5#
- 2.Sd8#
- 2.Re7#
- 1...Rb5
- 2.Sg5#
- 2.Sd8#
- 2.Re7#
- 1...Rb6
- 2.Sg5#
- 2.Sd8#
- 2.Re7#
- 1...Re7
- 2.Rxe7#
- 1...Rxf7+
- 2.Bxf7#
- 1...Be1
- 2.Qe5#
- 1...Bf2
- 2.Qe5#
- 1...Bh4
- 2.Qe5#
- 1...Be5
- 2.Qxe5#
- 1...Bxd6
- 2.Rxd6#
- 1...Scd7
- 2.Sd8#
- 1...Sbd7
- 2.Sg5#
- 1...Rb1
- Tries
- 1.Kg6?
- threat
- 2.Sg5#
- 2.Sd8#
- 1...Rxf7
- 2.Bxf7#
- 1...Rd7
- 2.Sg5#
- 1...Bf4
- 2.Sd8#
- 1...Bh4
- 2.Sd8#
- 2.Qe5#
- 1...Sb3
- 2.Sd8#
- 1...Sa4
- 2.Sd8#
- 1...Sca6
- 2.Sd8#
- 1...Scd7
- 2.Sd8#
- 1...Sba6
- 2.Sg5#
- 1...Sc6
- 2.Sg5#
- 1...Sbd7
- 2.Sg5#
- 1...Sd3!
- threat
- 1.Bg5?
- threat
- 2.Qf6#
- 1...Rxf7+
- 2.Bxf7#
- 1...Be5+
- 2.Qxe5#
- 1...Rb2
- 2.Re7#
- 1...Scd7
- 2.Sd8#
- 1...Sbd7!
- threat
- 1.Be7?
- threat
- 2.Sg5#
- 2.Sd8#
- 2.Qf6#
- 1...Be5+
- 2.Qxe5#
- 1...Rxe7
- 2.Rxe7#
- 2.Qf6#
- 1...Bxd6
- 2.Qf6#
- 1...Sd3
- 2.Sd8#
- 2.Qf6#
- 1...Rd7
- 2.Sg5#
- 2.Qf6#
- 1...Bf4
- 2.Sd8#
- 2.Qf6#
- 1...Bh4
- 2.Sd8#
- 2.Qe5#
- 1...Sb3
- 2.Sd8#
- 2.Qf6#
- 1...Sa4
- 2.Sd8#
- 2.Qf6#
- 1...Sca6
- 2.Sd8#
- 2.Qf6#
- 1...Scd7
- 2.Sd8#
- 1...Sba6
- 2.Sg5#
- 2.Qf6#
- 1...Sc6
- 2.Sg5#
- 2.Qf6#
- 1...Sbd7
- 2.Sg5#
- 1...Rb2!
- threat
- 1.Bd8?
- threat
- 2.Qf6#
- 1...Rxf7+
- 2.Bxf7#
- 1...Be5+
- 2.Qxe5#
- 1...Rb2
- 2.Re7#
- 1...Bh4
- 2.Qe5#
- 1...Sbd7
- 2.Sg5#
- 1...Scd7!
- threat
- 1.Qa2+?
- 1...Rb3
- 2.Sg5#
- 2.Sd8#
- 2.Re7#
- 1...Sb3!
- 1...Rb3
- 1.d7?
- threat
- 2.Sg5#
- 2.Sd8#
- 2.d8S#
- 1...Scxd7
- 2.Sd8#
- 1...Sbxd7
- 2.Sg5#
- 1...Sd3
- 2.d8S#
- 1...Bf4
- 2.Sd8#
- 2.d8S#
- 1...Bh4
- 2.Sd8#
- 2.Rd6#
- 2.Qe5#
- 2.d8S#
- 1...Bc7
- 2.Sg5#
- 1...Sb3
- 2.Sd8#
- 2.d8S#
- 1...Sa4
- 2.Sd8#
- 2.d8S#
- 1...Sca6
- 2.Sd8#
- 2.d8S#
- 1...Sba6
- 2.Sg5#
- 1...Sc6
- 2.Sg5#
- 1...Rxd7!
- threat
- 1.Kg6?
- Keys
- 1.Bh4!
- threat
- 2.Qf6#
- 1...Rxf7+
- 2.Bxf7#
- 1...Be5+
- 2.Qxe5#
- 1...Bxh4
- 2.Qe5#
- 1...Rb2
- 2.Re7#
- 1...Scd7
- 2.Sd8#
- 1...Sbd7
- 2.Sg5#
- threat
- 1.Bh4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- R(g);OGATE::R1(F),XR(g)
- R(g);CHECK,OGATE,XS(G)::B(I),XR(g)
- B(b);N_GUARD::QAR1(A)
- B(b);N_GUARD,P_PINB(E)::QAR1(A),XB(b)
- B(b);OGATE,XP(D)::R1(B),XB(b)
- S(e);N_PINS(G)::S(G)
- S(i);N_PINS(G)::S(G)
- Tries
- Try
- K(H);N_SPINS(G),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- R(g);OGATE,XS(G)::B(I),XR(g)
- R(g);::S(G)
- B(b);::S(G)
- S(e);::S(G)
- S(i);::S(G)
- Refutation
- S(e);
- Try
- B(E);
- Threat
- QAR1(A)
- Vars
- R(g);CHECK,OGATE,XS(G)::B(I),XR(g)
- B(b);CHECK,N_GUARD::QAR1(A),XB(b)
- R(g);N_PINS(G),OGATE::R1(F)
- S(e);N_PINS(G)::S(G)
- Refutation
- S(i);N_PINS(G)
- Try
- B(E);N_SPINS(G)
- Threat
- DUALS(3)
- Vars
- B(b);CHECK,N_GUARD::QAR1(A),XB(b)
- B(b);XP(D)::QAR1(A)
- S(e);::S(G)
- S(i);::S(G)
- Refutation
- R(g);
- Try
- B(E);
- Threat
- QAR1(A)
- Vars
- R(g);CHECK,OGATE,XS(G)::B(I),XR(g)
- B(b);CHECK,N_GUARD::QAR1(A),XB(b)
- R(g);N_PINS(G),OGATE::R1(F)
- B(b);N_GUARD::QAR1(A)
- S(i);N_PINS(G)::S(G)
- Refutation
- S(e);N_PINS(G)
- Try
- Q(A);CHECK
- Refutation
- S(e);P_SPINS(e)
- Try
- P(D);N_SPINS(G)
- Threat
- DUALS(3)
- Vars
- S(e);XP(D)::S(G)
- S(i);XP(D)::S(G)
- S(e);::P=S
- B(b);::S(G)
- S(i);::S(G)
- Refutation
- R(g);P_PINS(G),XP(D)
- Try
- Actual
- B(E);
- Threat
- QAR1(A)
- Vars
- R(g);CHECK,OGATE,XS(G)::B(I),XR(g)
- B(b);CHECK,N_GUARD::QAR1(A),XB(b)
- B(b);N_GUARD,XB(E)::QAR1(A)
- R(g);N_PINS(G),OGATE::R1(F)
- S(e);N_PINS(G)::S(G)
- S(i);N_PINS(G)::S(G)
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