MESON Chess Problem Database
Problem Display
PID: 137112 (6Q1/2bKP3/4N3/3kr2R/3P3R/1PB1n1qb/r3P1p1/3N4 w - - 0 1)
Ellerman, Arnoldo
L'Italia Scacchistica, 1934
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Qe1
- 2.Sxe3#
- 1...Qh2
- 2.Sxe3#
- 1...Qg6
- 2.Sxe3#
- 1...Qg7
- 2.Sxe3#
- 1...Qxg8
- 2.Sxe3#
- 1...Rb2
- 2.Qa8#
- 1...Rc2
- 2.Qa8#
- 1...Rd2
- 2.Qa8#
- 1...Rxe2
- 2.Qa8#
- 1...Ra8
- 2.Qxa8#
- 1...Rf5
- 2.Sxc7#
- 2.Sg7#
- 1...Bxe6+
- 2.Qxe6#
- 1...Ba5
- 2.Qa8#
- 1...Sxd1
- 2.e4#
- 1...Sf1
- 2.e4#
- 1...Sc2
- 2.e4#
- 1...Sc4
- 2.e4#
- 1...Sg4
- 2.Sc5#
- 1...Sf5
- 2.Sxc7#
- 1...Qe1
- Tries
- 1.Ba1?
- threat
- 2.Sc3#
- 1...Bxe6+
- 2.Qxe6#
- 1...Sxd1
- 2.e4#
- 1...Sg4
- 2.Sc5#
- 1...Qe1
- 2.Sxe3#
- 1...Ba5
- 2.Qa8#
- 1...Sf1
- 2.e4#
- 1...Sc2
- 2.e4#
- 1...Sc4
- 2.e4#
- 1...Sf5
- 2.Sxc7#
- 1...Rc2!
- threat
- 1.Ba5?
- threat
- 2.Sc3#
- 2.Qa8#
- 1...Bxe6+
- 2.Qxe6#
- 1...Qxg8
- 2.Sc3#
- 2.Sxe3#
- 1...Rxa5
- 2.Sc3#
- 1...Bxa5
- 2.Qa8#
- 1...Sxd1
- 2.Qa8#
- 2.e4#
- 1...Sg4
- 2.Qa8#
- 1...Qe1
- 2.Sxe3#
- 2.Qa8#
- 1...Bb8
- 2.Sc3#
- 1...Bd8
- 2.Sc3#
- 1...Sf1
- 2.Qa8#
- 2.e4#
- 1...Sc2
- 2.Qa8#
- 2.e4#
- 1...Sc4
- 2.Qa8#
- 2.e4#
- 1...Sf5
- 2.Sxc7#
- 2.Qa8#
- 1...Rc2!
- threat
- 1.Rf5?
- threat
- 2.Sg5#
- 2.Sxc7#
- 2.Sg7#
- 1...Qxh4
- 2.Sc5#
- 2.Sg5#
- 1...Qxg8
- 2.Sxe3#
- 2.Sxc7#
- 1...Rxf5
- 2.Sxc7#
- 1...Sxf5
- 2.Sxc7#
- 1...Qf4
- 2.Sc5#
- 2.Sg5#
- 1...Qg4
- 2.Sg5#
- 1...Bg4
- 2.Sc5#
- 2.Sg5#
- 1...Sg4
- 2.Sc5#
- 2.Sg5#
- 1...Qg5
- 2.Sxg5#
- 2.Sxc7#
- 2.Sg7#
- 1...Qg6
- 2.Sxe3#
- 2.Sxc7#
- 1...Qg7
- 2.Sxe3#
- 2.Sxc7#
- 2.Sxg7#
- 1...Ra6
- 2.Sxc7#
- 1...Ra8
- 2.Sxc7#
- 2.Qxa8#
- 1...Ba5
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 2.Qa8#
- 1...Bb6
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 1...Bd6
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 1...Bb8
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 1...Bd8
- 2.Sg5#
- 2.Sc7#
- 2.Sg7#
- 1...Bxf5!
- threat
- 1.Ba1?
- Keys
- 1.Bb2!
- threat
- 2.Sc3#
- 1...Bxe6+
- 2.Qxe6#
- 1...Sxd1
- 2.e4#
- 1...Sg4
- 2.Sc5#
- 1...Qe1
- 2.Sxe3#
- 1...Ba5
- 2.Qa8#
- 1...Sf1
- 2.e4#
- 1...Sc2
- 2.e4#
- 1...Sc4
- 2.e4#
- 1...Sf5
- 2.Sxc7#
- threat
- 1.Bb2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 9
- Sets
- Q(d);N_GUARD::S(A),XS(c)
- Q(d);N_GUARD,P_PINP(J)::S(A),XS(c)
- Q(d);N_GUARD,XQ(K)::S(A),XS(c)
- R(a);N_GUARD::QAB(K)
- R(a);N_GUARD,XP(B)::QAB(K)
- R(a);N_GUARD::QAB(K),XR(a)
- B(e);CHECK,OGATE,P_SPINB(e),XS(H)::QAB1(K),XB(e)
- B(h);S_CUTR(a)::QAB(K)
- S(c);OGATE,XS(A)::P(B)
- S(c);OGATE::P(B)
- S(c);N_PINS(H)::QAB(K)+S(H)
- S(c);N_PINS(H),N_SPINR(g)::QAB(K)+S(H),DCHECK,XB(h)
- Tries
- Try
- B(D);
- Threat
- S(A)
- Vars
- B(e);CHECK,OGATE,P_SPINB(e),XS(H)::QAB1(K),XB(e)
- S(c);OGATE,XS(A)::P(B)
- S(c);N_PINS(H)::QAB(K)+S(H)
- Q(d);N_GUARD::S(A),XS(c)
- B(h);S_CUTR(a)::QAB(K)
- S(c);OGATE::P(B)
- S(c);N_PINS(H),N_SPINR(g)::QAB(K)+S(H),DCHECK,XB(h)
- Refutation
- R(a);
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- B(e);CHECK,OGATE,P_SPINB(e),XS(H)::QAB1(K),XB(e)
- R(a);XB(D)::S(A)
- B(h);XB(D)::QAB(K)
- S(c);N_PINS(H)::QAB(K)
- B(h);::S(A)
- Refutation
- R(a);
- Try
- R(G);N_SPINS(H)
- Threat
- DUALS(3)
- Vars
- R(g);N_SPINR(g),XR(G)::QAB(K)+S(H),DCHECK,XB(h)
- S(c);N_SPINR(g),XR(G)::QAB(K)+S(H),DCHECK,XB(h)
- Q(d);::QAB(K)+S(H)
- R(a);::QAB(K)+S(H),DCHECK,XB(h)
- Refutation
- B(e);N_SPINR(g),P_PINS(H),XR(G)
- Try
- Actual
- B(D);
- Threat
- S(A)
- Vars
- B(e);CHECK,OGATE,P_SPINB(e),XS(H)::QAB1(K),XB(e)
- S(c);OGATE,XS(A)::P(B)
- S(c);N_PINS(H)::QAB(K)+S(H)
- Q(d);N_GUARD::S(A),XS(c)
- B(h);S_CUTR(a)::QAB(K)
- S(c);OGATE::P(B)
- S(c);N_PINS(H),N_SPINR(g)::QAB(K)+S(H),DCHECK,XB(h)
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).