MESON Chess Problem Database
Problem Display
PID: 83744 (3r4/rnb4Q/qpb5/1nN5/1p6/pPkB1R1K/5B2/1R3N2 w - - 0 1)
Ellerman, Arnoldo
L'Italia Scacchistica, 1920
#2
9 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxd3
- 2.Qxd3#
- 1...Rd4
- 2.Be1#
- 1...Rd5
- 2.Se4#
- 1...Ra8
- 2.Be4#
- 1...Rb8
- 2.Be4#
- 1...Rc8
- 2.Be4#
- 1...Re8
- 2.Be4#
- 1...Rg8
- 2.Be4#
- 1...Rh8
- 2.Be4#
- 1...Be4
- 2.Sxe4#
- 1...Bd5
- 2.Be4#
- 1...Bd7+
- 2.Bf5#
- 1...Be8
- 2.Se4#
- 1...Bd6
- 2.Be4#
- 1...Sd4
- 2.Be1#
- 1...S5d6
- 2.Qg7#
- 1...Sa5
- 2.Sa4#
- 1...S7d6
- 2.Be4#
- 1...Rxd3
- Tries
- 1.Bc2+?
- 1...Rd3
- 2.Qxd3#
- 1...Bxf3!
- 1...Rd3
- 1.Be2+?
- 1...Rd3
- 2.Qxd3#
- 1...Bxf3!
- 1...Rd3
- 1.Bc4+?
- 1...Rd3
- 2.Qxd3#
- 1...Bxf3!
- 1...Rd3
- 1.Bxb5+?
- 1...Rd3
- 2.Qxd3#
- 1...Bxf3!
- 1...Rd3
- 1.Qh4?
- threat
- 2.Be1#
- 2.Qc4#
- 1...Bd7+
- 2.Bf5#
- 1...Rxd3
- 2.Qc4#
- 1...Rd4
- 2.Be1#
- 1...Re8
- 2.Be4#
- 2.Qc4#
- 1...Rh8
- 2.Be1#
- 2.Be4#
- 1...Be4
- 2.Sxe4#
- 1...Bd5
- 2.Be1#
- 2.Be4#
- 1...Bg3
- 2.Qc4#
- 1...Sd4
- 2.Be1#
- 1...S5d6
- 2.Be1#
- 2.Bd4#
- 2.Qf6#
- 2.Qd4#
- 1...Sa5
- 2.Sa4#
- 2.Be1#
- 1...S7d6
- 2.Be1#
- 2.Be4#
- 1...Bf4!
- threat
- 1.Qh6?
- threat
- 2.Qc1#
- 2.Qd2#
- 1...Bd7+
- 2.Bf5#
- 1...Rh8
- 2.Be4#
- 1...Sd4
- 2.Be1#
- 2.Qd2#
- 1...Bf4!
- threat
- 1.Qf7?
- threat
- 2.Qc4#
- 1...Bd7+
- 2.Bf5#
- 1...Rd4
- 2.Be1#
- 1...Rd5
- 2.Se4#
- 1...Bd5
- 2.Be4#
- 1...Sd4
- 2.Be1#
- 1...S5d6
- 2.Qf6#
- 2.Qg7#
- 1...Sa5
- 2.Sa4#
- 1...S7d6
- 2.Be4#
- 1...Rh8+!
- threat
- 1.Qg7+?
- 1...Rd4
- 2.Be1#
- 2.Be4#
- 1...Sd4
- 2.Be1#
- 1...Be5!
- 1...Rd4
- 1.Bc2+?
- Keys
- 1.Qg8!
- threat
- 2.Qc4#
- 1...Bd7+
- 2.Bf5#
- 1...Rxg8
- 2.Be4#
- 1...Rd4
- 2.Be1#
- 1...Rd5
- 2.Se4#
- 1...Bd5
- 2.Be4#
- 1...Sd4
- 2.Be1#
- 1...S5d6
- 2.Qg7#
- 1...Sa5
- 2.Sa4#
- 1...S7d6
- 2.Be4#
- threat
- 1.Qg8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 9
- Sets
- R(k);OGATE,P_PINR(F),P_SPINR(k),XB(E)::QAR1(I),XR(k)
- R(k);SBLOCK::B(C)
- R(k);S_CUTB(g)::S(H)
- R(k);N_GUARD::R(F)+B(E)
- R(k);N_GUARD,P_PINQ(I)::R(F)+B(E)
- B(g);N_GUARD::S(H),XB(g)
- B(g);S_CUTR(k)::R(F)+B(E)
- B(g);CHECK,N_GUARD,S_CUTR(k)::R(F)+B(E)
- B(g);N_GUARD::S(H)
- B(j);S_CUTR(k)::R(F)+B(E)
- S(d);SBLOCK::B(C)
- S(d);N_GUARD,S_CUTB(j),S_CUTR(k)::QAB(I)
- S(i);S_CUTQ(e)::S(H)
- S(i);S_CUTR(k)::R(F)+B(E)
- Tries
- Try
- B(E);CHECK
- Vars
- R(k);N_GUARD,P_PINR(F),P_SPINR(k)::QAR1(I),XR(k)
- Refutation
- B(g);XR(F)
- Try
- B(E);CHECK
- Vars
- R(k);N_GUARD,P_PINR(F),P_SPINR(k)::QAR1(I),XR(k)
- Refutation
- B(g);XR(F)
- Try
- B(E);CHECK
- Vars
- R(k);N_GUARD,P_PINR(F),P_SPINR(k)::QAR1(I),XR(k)
- Refutation
- B(g);XR(F)
- Try
- B(E);CHECK,XS(d)
- Vars
- R(k);N_GUARD,P_PINR(F),P_SPINR(k)::QAR1(I),XR(k)
- Refutation
- B(g);XR(F)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- B(g);CHECK,N_GUARD,S_CUTR(k)::R(F)+B(E)
- R(k);P_PINR(F),P_SPINR(k),XB(E)::QAR1(I)
- R(k);::B(C)
- B(g);N_GUARD::S(H),XB(g)
- B(j);::QAR1(I)
- S(d);::B(C)
- Refutation
- B(j);
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- B(g);CHECK,N_GUARD,S_CUTR(k)::R(F)+B(E)
- R(k);N_GUARD,P_PINQ(I)::R(F)+B(E)
- Refutation
- B(j);
- Try
- Q(I);
- Threat
- QAR1(I)
- Vars
- B(g);CHECK,N_GUARD,S_CUTR(k)::R(F)+B(E)
- R(k);SBLOCK::B(C)
- R(k);S_CUTB(g)::S(H)
- B(g);S_CUTR(k)::R(F)+B(E)
- S(d);SBLOCK::B(C)
- S(i);S_CUTQ(e)::S(H)
- S(i);S_CUTR(k)::R(F)+B(E)
- Refutation
- R(k);CHECK
- Try
- Q(I);CHECK
- Vars
- S(d);P_SPINS(d)::B(C)
- Refutation
- B(j);P_SPINB(j)
- Try
- Actual
- Q(I);
- Threat
- QAR1(I)
- Vars
- B(g);CHECK,N_GUARD,S_CUTR(k)::R(F)+B(E)
- R(k);N_GUARD,XQ(I)::R(F)+B(E)
- R(k);SBLOCK::B(C)
- R(k);S_CUTB(g)::S(H)
- B(g);S_CUTR(k)::R(F)+B(E)
- S(d);SBLOCK::B(C)
- S(d);N_GUARD,S_CUTB(j),S_CUTR(k)::QAB(I)
- S(i);S_CUTQ(e)::S(H)
- S(i);S_CUTR(k)::R(F)+B(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).