MESON Chess Problem Database
Problem Display
PID: 152362 (1NR5/8/3p4/6P1/pbNk1B2/3p4/QP1p4/3K1n1B w - - 0 1)
Lider, Valentin Viktorovich
L'Italia Scacchistica, 1985
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Bc5
- 2.Sc6#
- 1...Sh2
- 2.Be3#
- 1...Se3+
- 2.Bxe3#
- 1...Sg3
- 2.Be3#
- 1...d5
- 2.Be5#
- 1...Bc5
- Tries
- 1.Sxd2?
- threat
- 2.Rc4#
- 2.Qc4#
- 2.Qd5#
- 1...Sxd2
- 2.Qd5#
- 1...Bc5
- 2.Sc6#
- 2.Qc4#
- 2.Qd5#
- 1...d5
- 2.Qxd5#
- 1...Se3+!
- threat
- 1.Sa3?
- threat
- 2.Sb5#
- 2.Rc4#
- 2.Qc4#
- 2.Qd5#
- 1...Bxa3
- 2.Rc4#
- 2.Qc4#
- 2.Qd5#
- 1...Bc5
- 2.Sb5#
- 2.Sc6#
- 2.Qc4#
- 2.Qd5#
- 1...d5
- 2.Sb5#
- 2.Qxd5#
- 1...Se3+!
- threat
- 1.Se3?
- threat
- 2.Sf5#
- 2.Rc4#
- 2.Qc4#
- 2.Qd5#
- 1...Bc5
- 2.Sf5#
- 2.Sc6#
- 2.Qc4#
- 2.Qd5#
- 1...Sg3
- 2.Rc4#
- 2.Qc4#
- 2.Qd5#
- 1...d5
- 2.Sf5#
- 2.Qxd5#
- 1...Sxe3+!
- threat
- 1.Sa5?
- threat
- 2.Rc4#
- 2.Qc4#
- 2.Qd5#
- 1...Bc5
- 2.Sac6#
- 2.Sbc6#
- 2.Qc4#
- 2.Qd5#
- 1...d5
- 2.Qxd5#
- 1...Se3+!
- threat
- 1.Se5?
- threat
- 2.Rc4#
- 2.Qc4#
- 2.Qd5#
- 1...Bc5
- 2.Sec6#
- 2.Sbc6#
- 2.Qc4#
- 2.Qd5#
- 1...d5
- 2.Qxd5#
- 1...Se3+!
- threat
- 1.Sb6?
- threat
- 2.Rc4#
- 2.Qc4#
- 2.Qd5#
- 1...Bc5
- 2.Sc6#
- 2.Qc4#
- 2.Qd5#
- 1...d5
- 2.Qxd5#
- 1...Se3+!
- threat
- 1.Sxd6?
- threat
- 2.Sb5#
- 2.Sf5#
- 2.Rc4#
- 2.Qc4#
- 2.Qd5#
- 1...Bxd6
- 2.Rc4#
- 2.Qc4#
- 2.Qd5#
- 1...Bc5
- 2.Sb5#
- 2.Sf5#
- 2.Sc6#
- 2.Qc4#
- 2.Qd5#
- 1...Sg3
- 2.Sb5#
- 2.Rc4#
- 2.Qc4#
- 2.Qd5#
- 1...Se3+!
- threat
- 1.Rc5?
- threat
- 2.Rd5#
- 1...Se3+
- 2.Bxe3#
- 1...Bxc5
- 2.Sc6#
- 1...dxc5
- 2.Sc6#
- 2.Be5#
- 1...d5
- 2.Rxd5#
- 1...Kxc5!
- threat
- 1.Qa1?
- 1...Se3+
- 2.Bxe3#
- 1...Bc5
- 2.b3#
- 1...Ba3
- 2.bxa3#
- 1...Bc3
- 2.bxc3#
- 1...Ba5
- 2.b4#
- 1...Sh2
- 2.Be3#
- 1...Sg3
- 2.Be3#
- 1...d5
- 2.Be5#
- 1...a3!
- 1...Se3+
- 1.Qa3?
- 1...Se3+
- 2.Bxe3#
- 1...Bc5
- 2.Qc3#
- 1...Bc3
- 2.Qxd6#
- 2.Qxc3#
- 2.bxc3#
- 1...Ba5
- 2.Qxd6#
- 1...Sh2
- 2.Be3#
- 1...Sg3
- 2.Be3#
- 1...d5
- 2.Be5#
- 1...Bxa3!
- 1...Se3+
- 1.Sxd2?
- Keys
- 1.Qxa4!
- 1...Se3+
- 2.Bxe3#
- 1...Ba3
- 2.Sxa3#
- 1...Bc3
- 2.Qa7#
- 1...Ba5
- 2.Sxa5#
- 1...Bc5
- 2.Sc6#
- 1...Sh2
- 2.Be3#
- 1...Sg3
- 2.Be3#
- 1...d5
- 2.Be5#
- 1...Se3+
- 1.Qxa4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- B(e);SBLOCK::S(H)
- S(a);N_GUARD::B(F)
- S(a);CHECK,N_GUARD::B(F),XS(a)
- P(g);N_GUARD::B(F)
- Tries
- Try
- S(E);XP(b)
- Threat
- DUALS(3)
- Vars
- S(a);XS(E)::QAR1(C)
- P(g);::QAR1(C),XP(g)
- Refutation
- S(a);CHECK
- Try
- S(E);
- Threat
- DUALS(4)
- Refutation
- S(a);CHECK
- Try
- S(E);
- Threat
- DUALS(4)
- Refutation
- S(a);CHECK,XS(E)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- P(g);::QAR1(C),XP(g)
- Refutation
- S(a);CHECK
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- P(g);::QAR1(C),XP(g)
- Refutation
- S(a);CHECK
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- P(g);::QAR1(C),XP(g)
- Refutation
- S(a);CHECK
- Try
- S(E);XP(g)
- Threat
- DUALS(5)
- Refutation
- S(a);CHECK
- Try
- R(I);
- Threat
- R1(I)
- Vars
- S(a);CHECK,N_GUARD::B(F),XS(a)
- B(e);SBLOCK,XR(I)::S(H)
- P(g);::R1(I),XP(g)
- Refutation
- K(f);S_FLIGHT,XR(I)
- Try
- Q(C);
- Vars
- S(a);CHECK,N_GUARD::B(F),XS(a)
- B(e);N_GUARD::QAB(C)+P(D)
- B(e);OGATE::QAB(C)+P(D),XB(e)
- B(e);OGATE::P(D),XB(e)
- B(e);OGATE::QAB(C)+P(D)
- S(a);N_GUARD::B(F)
- P(g);N_GUARD::B(F)
- Refutation
- P(d);
- Try
- Q(C);
- Vars
- S(a);CHECK,N_GUARD::B(F),XS(a)
- B(e);N_GUARD::QAB1(C)
- B(e);OGATE::QAR2(C),XP(g)
- S(a);N_GUARD::B(F)
- P(g);N_GUARD::B(F)
- Refutation
- B(e);XQ(C)
- Try
- Actual
- Q(C);XP(d)
- Vars
- S(a);CHECK,N_GUARD::B(F),XS(a)
- B(e);::QAR(C)+S(E),XB(e)
- B(e);N_GUARD::QAB(C)
- B(e);SBLOCK::S(H)
- S(a);N_GUARD::B(F)
- P(g);N_GUARD::B(F)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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