MESON Chess Problem Database
Problem Display
PID: 83622 (1rb5/B2NPB2/3PKN2/1p3R2/2k1p2Q/P1p1r1bq/P1n4n/3R4 w - - 0 1)
Ellerman, Arnoldo
L'Italia Scacchistica, 1932
#2
12 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Rc5#
- 1...Qg2
- 2.Rc5#
- 1...Qxf5+
- 2.Kxf5#
- 1...Qxh4
- 2.Rc5#
- 1...Be1
- 2.Ke5#
- 1...Bf2
- 2.Ke5#
- 1...Bxh4
- 2.Ke5#
- 1...Be5
- 2.Kxe5#
- 1...Bxd6
- 2.Kxd6#
- 1...Bb7
- 2.Sb6#
- 1...Bxd7+
- 2.Kxd7#
- 1...Sa1
- 2.Rd4#
- 1...Se1
- 2.Rd4#
- 1...Sxa3
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...Sd4+
- 2.Rxd4#
- 1...Sg4
- 2.Rc5#
- 1...Qf1
- Tries
- 1.Sg4?
- threat
- 2.Kf6#
- 2.Rc5#
- 1...Bxd7+
- 2.Kxd7#
- 1...Sd4+
- 2.Rxd4#
- 1...Qxg4
- 2.Kf6#
- 1...Qxh4
- 2.Rc5#
- 1...Bxh4
- 2.Ke5#
- 2.Se5#
- 2.Rc5#
- 1...Bxd6
- 2.Kxd6#
- 2.Kf6#
- 1...Sxa3
- 2.Rd4#
- 1...Sxg4
- 2.Rc5#
- 1...Be5
- 2.Kxe5#
- 2.Sxe5#
- 1...Bb7
- 2.Sb6#
- 2.Rc5#
- 1...Sb4
- 2.Sxe3#
- 2.Rd4#
- 2.Rc5#
- 1...Rd3!
- threat
- 1.Sh5?
- threat
- 2.Kf6#
- 1...Qxf5+
- 2.Kxf5#
- 1...Bxd7+
- 2.Kxd7#
- 1...Sd4+
- 2.Rxd4#
- 1...Qxh4
- 2.Rc5#
- 1...Bxh4
- 2.Ke5#
- 1...Sxa3
- 2.Rd4#
- 1...Be5
- 2.Kxe5#
- 1...Bb7
- 2.Sb6#
- 1...Sb4
- 2.Rd4#
- 1...Sg4
- 2.Rc5#
- 1...Rd3!
- threat
- 1.Sh7?
- threat
- 2.Kf6#
- 1...Qxf5+
- 2.Kxf5#
- 1...Bxd7+
- 2.Kxd7#
- 1...Sd4+
- 2.Rxd4#
- 1...Qxh4
- 2.Rc5#
- 1...Bxh4
- 2.Ke5#
- 1...Sxa3
- 2.Rd4#
- 1...Be5
- 2.Kxe5#
- 1...Bb7
- 2.Sb6#
- 1...Sb4
- 2.Rd4#
- 1...Sg4
- 2.Rc5#
- 1...Rd3!
- threat
- 1.Se8?
- threat
- 2.Kf6#
- 1...Qxf5+
- 2.Kxf5#
- 1...Bxd7+
- 2.Kxd7#
- 1...Sd4+
- 2.Rxd4#
- 1...Qxh4
- 2.Rc5#
- 1...Bxh4
- 2.Ke5#
- 1...Sxa3
- 2.Rd4#
- 1...Be5
- 2.Kxe5#
- 1...Bb7
- 2.Sb6#
- 1...Sb4
- 2.Rd4#
- 1...Sg4
- 2.Rc5#
- 1...Rd3!
- threat
- 1.Sg8?
- threat
- 2.Kf6#
- 1...Qxf5+
- 2.Kxf5#
- 1...Bxd7+
- 2.Kxd7#
- 1...Sd4+
- 2.Rxd4#
- 1...Qxh4
- 2.Rc5#
- 1...Bxh4
- 2.Ke5#
- 1...Sxa3
- 2.Rd4#
- 1...Be5
- 2.Kxe5#
- 1...Bb7
- 2.Sb6#
- 1...Sb4
- 2.Rd4#
- 1...Sg4
- 2.Rc5#
- 1...Rd3!
- threat
- 1.Qxh3?
- threat
- 2.Rc5#
- 1...Bxd7+
- 2.Kxd7#
- 1...Sd4+
- 2.Rxd4#
- 1...Bxd6
- 2.Kxd6#
- 1...Sxa3
- 2.Rd4#
- 1...Be5
- 2.Kxe5#
- 1...Rd3!
- threat
- 1.Qxe4+?
- 1...Sd4+
- 2.Rxd4#
- 1...Rxe4+!
- 1...Sd4+
- 1.e8Q?
- threat
- 2.Ke7#
- 1...Qxf5+
- 2.Kxf5#
- 1...Bxd7+
- 2.Kxd7#
- 1...Sd4+
- 2.Rxd4#
- 1...Bxd6
- 2.Kxd6#
- 1...Sxa3
- 2.Rd4#
- 1...Bb7
- 2.Sb6#
- 1...Sb4
- 2.Rd4#
- 1...Rd3!
- threat
- 1.e8S?
- threat
- 2.Ke7#
- 1...Qxf5+
- 2.Kxf5#
- 1...Bxd7+
- 2.Kxd7#
- 1...Sd4+
- 2.Rxd4#
- 1...Bxd6
- 2.Kxd6#
- 2.Sxd6#
- 1...Sxa3
- 2.Rd4#
- 1...Bb7
- 2.Sb6#
- 1...Sb4
- 2.Rd4#
- 1...Rd3!
- threat
- 1.e8B?
- threat
- 2.Ke7#
- 1...Qxf5+
- 2.Kxf5#
- 1...Bxd7+
- 2.Kxd7#
- 1...Sd4+
- 2.Rxd4#
- 1...Bxd6
- 2.Kxd6#
- 1...Sxa3
- 2.Rd4#
- 1...Bb7
- 2.Sb6#
- 1...Sb4
- 2.Rd4#
- 1...Rd3!
- threat
- 1.e8R?
- threat
- 2.Ke7#
- 1...Qxf5+
- 2.Kxf5#
- 1...Bxd7+
- 2.Kxd7#
- 1...Sd4+
- 2.Rxd4#
- 1...Bxd6
- 2.Kxd6#
- 1...Sxa3
- 2.Rd4#
- 1...Bb7
- 2.Sb6#
- 1...Sb4
- 2.Rd4#
- 1...Rd3!
- threat
- 1.Sg4?
- Keys
- 1.Sxe4!
- threat
- 2.Kf6#
- 1...Qxf5+
- 2.Kxf5#
- 1...Bxd7+
- 2.Kxd7#
- 1...Sd4+
- 2.Rxd4#
- 1...Qxh4
- 2.Rc5#
- 1...Bxh4
- 2.Ke5#
- 1...Sxa3
- 2.Rd4#
- 1...Rd3
- 2.Sd2#
- 1...Be5
- 2.Kxe5#
- 1...Bb7
- 2.Sb6#
- 1...Sb4
- 2.Rd4#
- 1...Sg4
- 2.Rc5#
- threat
- 1.Sxe4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- Q(f);N_PINR(E)::R1(E)
- Q(f);CHECK,XR(E)::B(L)+K(G),XQ(f)
- Q(f);N_PINR(E),N_SPINP(h),XQ(D)::R1(E)
- B(e);::B(L)+K(G)
- B(e);N_SPINP(h),XQ(D)::B(L)+K(G)
- B(e);::B(L)+K(G),XB(e)
- B(e);XP(F)::B(L)+K(G),XB(e)
- B(k);N_PINS(J)::S(J)
- B(k);CHECK,XS(J)::B(L)+K(G),XB(k)
- S(a);N_GUARD::R1(A)
- S(a);N_GUARD,XP(C)::R1(A)
- S(a);CHECK,N_GUARD,N_SPINP(h)::R1(A),XS(a)
- S(b);N_PINR(E),N_SPINP(h)::R1(E)
- Tries
- Try
- S(H);N_PINP(h),N_SPINR(E)
- Threat
- DUALS(2)
- Vars
- B(k);CHECK,XS(J)::B(L)+K(G),XB(k)
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- Q(f);P_PINR(E),XS(H)::B(L)+K(G)
- Q(f);XQ(D)::R1(E)
- S(a);N_GUARD,XP(C)::R1(A)
- S(b);XS(H)::R1(E)
- Refutation
- R(d);
- Try
- S(H);
- Threat
- B(L)+K(G)
- Vars
- Q(f);CHECK,XR(E)::B(L)+K(G),XQ(f)
- B(k);CHECK,XS(J)::B(L)+K(G),XB(k)
- S(a);CHECK,N_GUARD,N_SPINP(h)::R1(A),XS(a)
- Q(f);N_PINR(E),N_SPINP(h),XQ(D)::R1(E)
- B(e);N_SPINP(h),XQ(D)::B(L)+K(G)
- S(a);N_GUARD,XP(C)::R1(A)
- B(e);::B(L)+K(G),XB(e)
- B(k);N_PINS(J)::S(J)
- S(a);N_GUARD::R1(A)
- S(b);N_PINR(E),N_SPINP(h)::R1(E)
- Refutation
- R(d);
- Try
- S(H);
- Threat
- B(L)+K(G)
- Vars
- Q(f);CHECK,XR(E)::B(L)+K(G),XQ(f)
- B(k);CHECK,XS(J)::B(L)+K(G),XB(k)
- S(a);CHECK,N_GUARD,N_SPINP(h)::R1(A),XS(a)
- Q(f);N_PINR(E),N_SPINP(h),XQ(D)::R1(E)
- B(e);N_SPINP(h),XQ(D)::B(L)+K(G)
- S(a);N_GUARD,XP(C)::R1(A)
- B(e);::B(L)+K(G),XB(e)
- B(k);N_PINS(J)::S(J)
- S(a);N_GUARD::R1(A)
- S(b);N_PINR(E),N_SPINP(h)::R1(E)
- Refutation
- R(d);
- Try
- S(H);
- Threat
- B(L)+K(G)
- Vars
- Q(f);CHECK,XR(E)::B(L)+K(G),XQ(f)
- B(k);CHECK,XS(J)::B(L)+K(G),XB(k)
- S(a);CHECK,N_GUARD,N_SPINP(h)::R1(A),XS(a)
- Q(f);N_PINR(E),N_SPINP(h),XQ(D)::R1(E)
- B(e);N_SPINP(h),XQ(D)::B(L)+K(G)
- S(a);N_GUARD,XP(C)::R1(A)
- B(e);::B(L)+K(G),XB(e)
- B(k);N_PINS(J)::S(J)
- S(a);N_GUARD::R1(A)
- S(b);N_PINR(E),N_SPINP(h)::R1(E)
- Refutation
- R(d);
- Try
- S(H);
- Threat
- B(L)+K(G)
- Vars
- Q(f);CHECK,XR(E)::B(L)+K(G),XQ(f)
- B(k);CHECK,XS(J)::B(L)+K(G),XB(k)
- S(a);CHECK,N_GUARD,N_SPINP(h)::R1(A),XS(a)
- Q(f);N_PINR(E),N_SPINP(h),XQ(D)::R1(E)
- B(e);N_SPINP(h),XQ(D)::B(L)+K(G)
- S(a);N_GUARD,XP(C)::R1(A)
- B(e);::B(L)+K(G),XB(e)
- B(k);N_PINS(J)::S(J)
- S(a);N_GUARD::R1(A)
- S(b);N_PINR(E),N_SPINP(h)::R1(E)
- Refutation
- R(d);
- Try
- Q(D);N_PINP(h),N_SPINR(E),XQ(f)
- Threat
- R1(E)
- Vars
- B(k);CHECK,XS(J)::B(L)+K(G),XB(k)
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- B(e);XP(F)::B(L)+K(G),XB(e)
- S(a);N_GUARD,XP(C)::R1(A)
- B(e);::B(L)+K(G),XB(e)
- Refutation
- R(d);
- Try
- Q(D);CHECK,P_SPINQ(D),XP(h)
- Vars
- S(a);CHECK,N_GUARD,P_SPINS(a)::R1(A),XS(a)
- Refutation
- R(d);CHECK,XQ(D)
- Try
- P(K);
- Threat
- B(L)+K(G)
- Vars
- Q(f);CHECK,XR(E)::B(L)+K(G),XQ(f)
- B(k);CHECK,XS(J)::B(L)+K(G),XB(k)
- S(a);CHECK,N_GUARD,N_SPINP(h)::R1(A),XS(a)
- B(e);XP(F)::B(L)+K(G),XB(e)
- S(a);N_GUARD,XP(C)::R1(A)
- B(k);N_PINS(J)::S(J)
- S(a);N_GUARD::R1(A)
- Refutation
- R(d);
- Try
- P(K);
- Threat
- B(L)+K(G)
- Vars
- Q(f);CHECK,XR(E)::B(L)+K(G),XQ(f)
- B(k);CHECK,XS(J)::B(L)+K(G),XB(k)
- S(a);CHECK,N_GUARD,N_SPINP(h)::R1(A),XS(a)
- S(a);N_GUARD,XP(C)::R1(A)
- B(k);N_PINS(J)::S(J)
- S(a);N_GUARD::R1(A)
- Refutation
- R(d);
- Try
- P(K);
- Threat
- B(L)+K(G)
- Vars
- Q(f);CHECK,XR(E)::B(L)+K(G),XQ(f)
- B(k);CHECK,XS(J)::B(L)+K(G),XB(k)
- S(a);CHECK,N_GUARD,N_SPINP(h)::R1(A),XS(a)
- B(e);XP(F)::B(L)+K(G),XB(e)
- S(a);N_GUARD,XP(C)::R1(A)
- B(k);N_PINS(J)::S(J)
- S(a);N_GUARD::R1(A)
- Refutation
- R(d);
- Try
- P(K);
- Threat
- B(L)+K(G)
- Vars
- Q(f);CHECK,XR(E)::B(L)+K(G),XQ(f)
- B(k);CHECK,XS(J)::B(L)+K(G),XB(k)
- S(a);CHECK,N_GUARD,N_SPINP(h)::R1(A),XS(a)
- B(e);XP(F)::B(L)+K(G),XB(e)
- S(a);N_GUARD,XP(C)::R1(A)
- B(k);N_PINS(J)::S(J)
- S(a);N_GUARD::R1(A)
- Refutation
- R(d);
- Try
- Actual
- S(H);N_SPINS(J),P_SPINS(H),XP(h)
- Threat
- B(L)+K(G)
- Vars
- Q(f);CHECK,XR(E)::B(L)+K(G),XQ(f)
- B(k);CHECK,XS(J)::B(L)+K(G),XB(k)
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- Q(f);N_PINR(E),XQ(D)::R1(E)
- B(e);XQ(D)::B(L)+K(G)
- S(a);N_GUARD,XP(C)::R1(A)
- R(d);N_PINS(H),P_PINS(J),SBLOCK::QAR(D)+S(H),DCHECK
- B(e);N_PINS(H),P_PINS(J)::B(L)+K(G),XB(e)
- B(k);::S(J)
- S(a);N_GUARD::R1(A)
- S(b);N_PINR(E)::R1(E)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).