MESON Chess Problem Database
Problem Display
PID: 137473 (1B3N2/7r/3PB3/3nk1P1/3n3r/b5Pp/5N2/2QR3K w - - 0 1)
Ellerman, Arnoldo
L'Italia Scacchistica, 1953
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Re4
- 2.Sd3#
- 1...Sc2
- 2.Rxd5#
- 1...Se2
- 2.Rxd5#
- 1...Sb3
- 2.Rxd5#
- 1...Sf3
- 2.Rxd5#
- 1...Sb5
- 2.Rxd5#
- 1...Sf5
- 2.Rxd5#
- 1...Sc6
- 2.Rxd5#
- 1...Sb4
- 2.d7#
- 1...Sf4
- 2.Qe3#
- 1...Re4
- Tries
- 1.Qe3+?
- 1...Re4
- 2.Sd3#
- 2.Sg4#
- 2.Qxe4#
- 1...Sxe3!
- 1...Re4
- 1.Qc4?
- threat
- 2.Qxd5#
- 1...Sc3
- 2.Sg6#
- 1...Se3
- 2.Sg6#
- 1...Sb4
- 2.Sg6#
- 2.d7#
- 1...Sf4
- 2.Qxd4#
- 1...Sb6
- 2.Sg6#
- 1...Sf6
- 2.Sg6#
- 1...Se7
- 2.Sd7#
- 1...Sc7!
- threat
- 1.Qc5?
- threat
- 2.Qxd5#
- 2.d7#
- 1...Sxe6
- 2.Rxd5#
- 2.Qxd5#
- 1...Ra7
- 2.Qxd5#
- 1...Rb7
- 2.Qxd5#
- 1...Rc7
- 2.Qxd5#
- 1...Rd7
- 2.Qxd5#
- 1...Sb5
- 2.Rxd5#
- 2.Qxd5#
- 1...Sf5
- 2.Rxd5#
- 2.Qxd5#
- 1...Sc6
- 2.Rxd5#
- 2.Qxd5#
- 1...Bxc5!
- threat
- 1.Qe3+?
- Keys
- 1.Qc6!
- threat
- 2.Qxd5#
- 1...Sxc6
- 2.Rxd5#
- 1...Sc3
- 2.Sd3#
- 1...Se3
- 2.Sd3#
- 1...Sb4
- 2.d7#
- 1...Sf4
- 2.Qe4#
- 1...Sb6
- 2.Sd3#
- 1...Sf6
- 2.Sd3#
- 1...Sc7
- 2.Sd3#
- 1...Se7
- 2.Sd3#
- threat
- 1.Qc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 7
- Sets
- R(d);SBLOCK::S(D)
- S(c);OGATE::R1(B),XS(e)
- S(e);N_GUARD,S_CUTB(a)::B(I)+P(G)
- S(e);N_GUARD,S_CUTR(d)::QAR2(A)
- Tries
- Try
- Q(A);CHECK
- Refutation
- S(e);XQ(A)
- Try
- Q(A);
- Threat
- QAR1(A),XS(e)
- Vars
- S(e);::S(J)
- S(e);S_CUTR(d)::QAB1(A),XS(c)
- S(e);S_CUTR(g)::S(J)
- Refutation
- S(e);
- Try
- Q(A);P_PINS(e)
- Threat
- DUALS(2)
- Vars
- R(g);::QAR1(A),XS(e)
- Refutation
- B(a);N_SPINS(e),XQ(A)
- Try
- Actual
- Q(A);
- Threat
- QAR1(A),XS(e)
- Vars
- S(c);OGATE,XQ(A)::R1(B),XS(e)
- S(e);::S(D)
- S(e);N_GUARD,S_CUTB(a)::B(I)+P(G)
- S(e);OGATE::QAR1(A)
Developed and maintained by Brian Stephenson.
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