MESON Chess Problem Database
Problem Display
PID: 83521 (2B5/2n2P2/1p2r3/R2nbk1P/1pN1NB2/3P4/1Q1P4/4KR2 w - - 0 1)
Ellerman, Arnoldo
2nd HM., Good Companions (January), 1919
#2
12 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bxb2
- 2.Se3#
- 1...Bc3
- 2.Se3#
- 1...Bxf4
- 2.Se3#
- 1...Bd6
- 2.Se3#
- 1...Bf6
- 2.Se3#
- 1...Bg7
- 2.Se3#
- 1...Bh8
- 2.Se3#
- 1...Sc3
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sxf4
- 2.Se3#
- 1...Sf6
- 2.Se3#
- 1...Se7
- 2.Se3#
- 1...Bxb2
- Tries
- 1.Sg3+?
- 1...Kf6
- 2.f8Q#
- 1...Kg4!
- 1...Kf6
- 1.Sed6+?
- 1...Kf6
- 2.f8Q#
- 1...Bxd6+
- 2.Se3#
- 1...Kg4!
- 1...Kf6
- 1.Bh2+?
- 1...Bf4
- 2.Se3#
- 2.Rxf4#
- 1...Sf4
- 2.Se3#
- 2.Rxf4#
- 1...Kg4!
- 1...Bf4
- 1.Be3+?
- 1...Bf4
- 2.Rxf4#
- 1...Sf4
- 2.Rxf4#
- 1...Kg4!
- 1...Bf4
- 1.Bg3+?
- 1...Bf4
- 2.Se3#
- 2.Rxf4#
- 1...Sf4
- 2.Se3#
- 2.Rxf4#
- 1...Kg4!
- 1...Bf4
- 1.Bxe5+?
- 1...Sf4
- 2.Se3#
- 2.Rxf4#
- 1...Kg4!
- 1...Sf4
- 1.Bg5+?
- 1...Bf4
- 2.Se3#
- 2.Rxf4#
- 1...Sf4
- 2.Se3#
- 2.Rxf4#
- 1...Kg4!
- 1...Bf4
- 1.Bh6+?
- 1...Bf4
- 2.Se3#
- 2.Rxf4#
- 1...Sf4
- 2.Se3#
- 2.Rxf4#
- 1...Kg4!
- 1...Bf4
- 1.f8Q+?
- 1...Bf6
- 2.Se3#
- 1...Sf6
- 2.Se3#
- 1...Kg4!
- 1...Bf6
- 1.f8R+?
- 1...Bf6
- 2.Se3#
- 1...Sf6
- 2.Se3#
- 1...Kg4!
- 1...Bf6
- 1.Sg3+?
- Keys
- 1.Sf6!
- threat
- 2.Qxe5#
- 1...Bxb2+
- 2.Be3#
- 1...Bc3+
- 2.Be3#
- 1...Bd4+
- 2.Be3#
- 1...Bxf4+
- 2.Qe5#
- 1...Bd6+
- 2.Se3#
- 1...Bxf6+
- 2.Se3#
- 1...Kxf6
- 2.f8Q#
- 1...Sxf6
- 2.Se3#
- 1...Sc3
- 2.Be3#
- 2.Bh6#
- threat
- 1.Sf6!
This is a version of 64489
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- B(c);P_PINS(G),P_SPINS(b),XQ(C)::S(F)
- B(c);P_PINP(D),P_PINS(G),P_SPINS(b)::S(F)
- B(c);P_PINS(G),P_SPINB(c),P_SPINS(b),XB(H)::S(F)
- B(c);P_PINS(G),P_SPINS(b)::S(F)
- S(b);N_GUARD,P_SPINB(c)::S(F)
- S(b);N_GUARD,P_SPINB(c)::S(F),XS(b)
- S(b);N_GUARD,P_SPINB(c),P_SPINS(b),XB(H)::S(F)
- Tries
- Try
- S(G);CHECK
- Vars
- K(d);N_SPINR(f),P-FLIGHT,P_SPINB(c)::P=Q
- Refutation
- K(d);S_FLIGHT
- Try
- S(G);CHECK
- Vars
- K(d);N_SPINR(f),P-FLIGHT,P_SPINB(c)::P=Q
- B(c);CHECK,P_SPINS(b),XS(G)::S(F)
- Refutation
- K(d);S_FLIGHT
- Try
- B(H);CHECK
- Refutation
- K(d);S_FLIGHT
- Try
- B(H);CHECK
- Vars
- B(c);N_GUARD,P_SPINB(c),P_SPINS(b)::R1(B),XB(c)
- S(b);N_GUARD,P_SPINB(c),P_SPINS(b)::R1(B),XS(b)
- Refutation
- K(d);S_FLIGHT
- Try
- B(H);CHECK
- Refutation
- K(d);S_FLIGHT
- Try
- B(H);CHECK,XB(c)
- Refutation
- K(d);S_FLIGHT
- Try
- B(H);CHECK
- Refutation
- K(d);S_FLIGHT
- Try
- B(H);CHECK
- Refutation
- K(d);S_FLIGHT
- Try
- P(K);CHECK
- Vars
- B(c);P_PINS(G),P_SPINB(c),P_SPINS(b)::S(F)
- S(b);P_SPINB(c),P_SPINS(b)::S(F)
- Refutation
- K(d);S_FLIGHT
- Try
- P(K);CHECK
- Vars
- B(c);P_PINS(G),P_SPINB(c),P_SPINS(b)::S(F)
- S(b);P_SPINB(c),P_SPINS(b)::S(F)
- Refutation
- K(d);S_FLIGHT
- Try
- Actual
- S(G);
- Threat
- QAR1(C),XB(c)
- Vars
- B(c);CHECK,N_GUARD,P_SPINS(b),XQ(C)::R(B)+B(H)
- B(c);CHECK,N_GUARD,P_PINP(D),P_SPINS(b)::R(B)+B(H)
- B(c);CHECK,N_GUARD,P_SPINS(b)::R(B)+B(H)
- B(c);CHECK,P_SPINB(c),P_SPINS(b),XB(H)::QAR1(C)
- B(c);CHECK,P_SPINS(b)::S(F)
- B(c);CHECK,P_SPINS(b),XS(G)::S(F)
- K(d);N_SPINR(f),P-FLIGHT,P_SPINB(c),XS(G)::P=Q
- S(b);N_GUARD,P_SPINB(c),SBLOCK,XS(G)::S(F)
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).