MESON Chess Problem Database
Problem Display
PID: 206263 (1BbQ1b2/1pK1pp2/1P3p2/2N2N2/r4kpP/2p3p1/n1B1R1Pn/8 w - - 0 1)
Ellerman, Arnoldo
Comm., Circolo Genovese, 1925
#2
10 + 13
| 6490 | yacpdb | 2020 |
| 5454 | Near Snap | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Ra3
- 2.Qd4#
- 1...Rd4
- 2.Qxd4#
- 1...Ra5
- 2.Qd4#
- 1...Ra6
- 2.Qd4#
- 1...Ra7
- 2.Qd4#
- 1...Ra8
- 2.Qd4#
- 1...Be6
- 2.Kxb7#
- 1...Sb4
- 2.Qd4#
- 1...Ra3
- Tries
- 1.Se6+?
- 1...Bxe6
- 2.Kxb7#
- 1...fxe6!
- 1...Bxe6
- 1.Sd4?
- threat
- 2.Sd3#
- 2.Re4#
- 1...Rxd4
- 2.Qxd4#
- 1...Rc4
- 2.Re4#
- 1...Sc1
- 2.Re4#
- 1...Sb4
- 2.Re4#
- 1...f5
- 2.Sd3#
- 1...Bf5!
- threat
- 1.Sxe7?
- threat
- 2.Kxc8#
- 2.Sd3#
- 2.Sd5#
- 2.Qd6#
- 1...Re4
- 2.Sd3#
- 2.Rxe4#
- 1...Rc4
- 2.Kxc8#
- 2.Sd5#
- 2.Qd6#
- 1...Rd4
- 2.Qxd4#
- 1...Ra8
- 2.Sd3#
- 2.Sd5#
- 2.Re4#
- 2.Qd4#
- 2.Qd6#
- 1...Bf5
- 2.Kxb7#
- 2.Sd5#
- 2.Qd6#
- 1...Be6
- 2.Kxb7#
- 2.Sd3#
- 2.Qd6#
- 1...Bd7
- 2.Kxb7#
- 2.Kxd7#
- 2.Sd3#
- 2.Sd5#
- 1...Sc1
- 2.Kxc8#
- 2.Sd5#
- 2.Qd6#
- 1...Sb4
- 2.Kxc8#
- 2.Re4#
- 2.Qd4#
- 2.Qd6#
- 1...Sf3
- 2.Sd3#
- 2.Sd5#
- 1...Bxe7!
- threat
- 1.Sg7?
- threat
- 2.Sd3#
- 2.Sh5#
- 1...Re4
- 2.Sd3#
- 2.Rxe4#
- 1...Rc4
- 2.Sh5#
- 1...Rd4
- 2.Sh5#
- 2.Qxd4#
- 1...Bf5
- 2.Sh5#
- 1...Sc1
- 2.Sh5#
- 1...Sb4
- 2.Sh5#
- 2.Re4#
- 2.Qd4#
- 1...Bxg7!
- threat
- 1.Qxe7?
- threat
- 2.Kxc8#
- 2.Kd8#
- 2.Qe3#
- 1...Bxf5
- 2.Kxb7#
- 2.Kd8#
- 2.Qe3#
- 1...Re4
- 2.Qxe4#
- 1...Rd4
- 2.Qe3#
- 1...Ra8
- 2.Qe3#
- 2.Qe4#
- 1...Be6
- 2.Kxb7#
- 2.Kd8#
- 1...Bd7
- 2.Kxb7#
- 2.Kxd7#
- 2.Kd8#
- 2.Qe3#
- 1...Sf1
- 2.Kxc8#
- 2.Kd8#
- 1...Sf3
- 2.Qe3#
- 1...Bxe7!
- threat
- 1.Qd3?
- threat
- 2.Qe3#
- 2.Qxg3#
- 1...Bxf5
- 2.Qxf5#
- 2.Qe3#
- 1...Re4
- 2.Qxe4#
- 1...Sf3
- 2.Qe3#
- 1...Sf1!
- threat
- 1.Se6+?
- Keys
- 1.Se3!
- threat
- 2.Sd5#
- 1...Ke5
- 2.Kxc8#
- 1...Rd4
- 2.Qxd4#
- 1...Re4
- 2.Sd3#
- 1...Be6
- 2.Kxb7#
- 1...Sb4
- 2.Qd4#
- 1...e6
- 2.Qxf6#
- threat
- 1.Se3!
This anticipates 206388(1925)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 5
- Sets
- R(e);N_GUARD::QAR2(J)
- R(e);N_GUARD::QAR2(J),XR(e)
- B(l);::B(I)+K(H),XP(i)
- S(a);S_CUTR(e)::QAR2(J)
- Tries
- Try
- S(E);CHECK
- Vars
- B(l);XS(E)::B(I)+K(H),XP(i)
- Refutation
- P(k);XS(E)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- R(e);OGATE,XS(F)::QAR2(J),XR(e)
- R(e);P_PINS(E)::R1(B)
- S(a);::R1(B)
- P(h);::S(E)
- Refutation
- B(l);
- Try
- S(F);XP(j)
- Threat
- DUALS(4)
- Vars
- R(e);N_GUARD::QAR2(J),XR(e)
- Refutation
- B(m);XS(F)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- R(e);P_PINS(E)::S(F)
- B(l);::S(F)
- S(a);::S(F)
- Refutation
- B(m);XS(F)
- Try
- Q(J);XP(j)
- Threat
- DUALS(3)
- Vars
- R(e);N_GUARD::QAR1(J),XR(e)
- R(e);::QAB1(J)
- S(b);::QAB1(J)
- Refutation
- B(m);XQ(J)
- Try
- Q(J);
- Threat
- DUALS(2)
- Vars
- R(e);N_GUARD::QAR1(J),XR(e)
- S(b);::QAB1(J)
- Refutation
- S(b);
- Try
- Actual
- S(F);
- Threat
- S(F)
- Vars
- K(f);S_FLIGHT::B(I)+K(H),XB(l)
- R(e);N_GUARD::QAR2(J),XR(e)
- R(e);SBLOCK::S(E)
- B(l);::B(I)+K(H),XP(i)
- S(a);S_CUTR(e)::QAR2(J)
- P(j);OGATE::QAR2(J),XP(h)
Developed and maintained by Brian Stephenson.
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