MESON Chess Problem Database
Problem Display
PID: 56198 (1nRB4/r1n3NK/2qp4/N1kP2Q1/1Rb5/P1ppP3/6B1/8 w - - 0 1)
Larrain, Santiago
Themes-64, 1988
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Qa4
- 2.Se6#
- 1...Qxd5
- 2.Se6#
- 1...Qb7
- 2.Se6#
- 1...Qa8
- 2.Se6#
- 1...Qa6
- 2.Se6#
- 1...Qb6
- 2.Se6#
- 1...Bb3
- 2.Sxb3#
- 1...Bxd5
- 2.Sb3#
- 1...Ba6
- 2.Sb3#
- 1...Sb5
- 2.Rxc4#
- 1...Sxd5
- 2.Bb6#
- 1...Sca6
- 2.Bb6#
- 1...Se6
- 2.Bb6#
- 1...Se8
- 2.Bb6#
- 1...Qa4
- Tries
- 1.Sb7+?
- 1...Qxb7
- 2.Se6#
- 1...Rxb7!
- 1...Qxb7
- 1.Qf4?
- threat
- 2.Qxc4#
- 2.Qd4#
- 1...Bxd5
- 2.Qd4#
- 1...Qb5
- 2.Qd4#
- 1...Bb5
- 2.Qd4#
- 1...Qa6
- 2.Se6#
- 2.Qd4#
- 1...Ba2
- 2.Qd4#
- 1...Bb3
- 2.Sxb3#
- 2.Qd4#
- 1...Ba6
- 2.Sb3#
- 2.Qd4#
- 1...Sb5
- 2.Rxc4#
- 2.Qxc4#
- 1...Se6
- 2.Bb6#
- 2.Qxc4#
- 1...Qxd5!
- threat
- 1.Qh4?
- threat
- 2.Qxc4#
- 2.Qd4#
- 1...Bxd5
- 2.Qd4#
- 1...Qb5
- 2.Qd4#
- 1...Bb5
- 2.Qd4#
- 1...Qa6
- 2.Se6#
- 2.Qd4#
- 1...Ba2
- 2.Qd4#
- 1...Bb3
- 2.Sxb3#
- 2.Qd4#
- 1...Ba6
- 2.Sb3#
- 2.Qd4#
- 1...Sb5
- 2.Rxc4#
- 2.Qxc4#
- 1...Se6
- 2.Bb6#
- 2.Qxc4#
- 1...Qxd5!
- threat
- 1.Qf6?
- threat
- 2.Qd4#
- 1...Sb5
- 2.Rxc4#
- 1...Se6
- 2.Bb6#
- 1...Qxd5!
- threat
- 1.Qg4?
- threat
- 2.Qxc4#
- 2.Qd4#
- 1...Bxd5
- 2.Qd4#
- 1...Qb5
- 2.Qd4#
- 1...Bb5
- 2.Qd4#
- 1...Qa6
- 2.Se6#
- 2.Qd4#
- 1...Ba2
- 2.Qd4#
- 1...Bb3
- 2.Sxb3#
- 2.Qd4#
- 1...Ba6
- 2.Sb3#
- 2.Qd4#
- 1...Sb5
- 2.Rxc4#
- 2.Qxc4#
- 1...Se6
- 2.Bb6#
- 2.Qxc4#
- 1...Qxd5!
- threat
- 1.Qe5?
- threat
- 2.Qd4#
- 1...Qxd5
- 2.Se6#
- 1...Sb5
- 2.Rxc4#
- 1...Se6
- 2.Bb6#
- 1...dxe5!
- threat
- 1.dxc6+?
- 1...Sd5
- 2.Bb6#
- 1...d5
- 2.Be7#
- 2.Qe7#
- 1...Bd5!
- 1...Sd5
- 1.Sb7+?
- Keys
- 1.e4!
- threat
- 2.Qe3#
- 1...Kd4
- 2.Sb3#
- 1...Qxd5
- 2.Se6#
- 1...Sxd5
- 2.Bb6#
- 1...Sb5
- 2.Rxc4#
- 1...Se6
- 2.Bb6#
- threat
- 1.e4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 10
- Sets
- Q(e);P_SPINS(h)::S(H)
- Q(e);P_SPINQ(e),P_SPINS(h),XP(F)::S(H)
- B(c);N_GUARD::S(E),XB(c)
- B(c);N_GUARD,P_SPINB(c),XP(F)::S(E)
- B(c);N_GUARD::S(E)
- S(h);P_PINS(H),P_SPINQ(e),SBLOCK::R1(D),XB(c)
- S(h);OGATE,P_PINS(H),P_SPINQ(e),P_SPINS(h),XP(F)::B(K)
- S(h);OGATE,P_PINS(H),P_SPINQ(e)::B(K)
- Tries
- Try
- S(E);CHECK
- Vars
- Q(e);P_SPINS(h),XS(E)::S(H)
- Refutation
- R(g);XS(E)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- B(c);XP(F)::QAB1(G)
- Q(e);P_SPINS(h)::QAB1(G)
- B(c);::QAB1(G)
- Refutation
- Q(e);P_SPINS(h),XP(F)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- B(c);XP(F)::QAB1(G)
- Q(e);P_SPINS(h)::QAB1(G)
- B(c);::QAB1(G)
- Refutation
- Q(e);P_SPINS(h),XP(F)
- Try
- Q(G);
- Threat
- QAB1(G)
- Vars
- S(h);P_PINS(H),P_SPINQ(e),SBLOCK::R1(D),XB(c)
- S(h);OGATE,P_PINS(H),P_SPINQ(e)::B(K)
- Refutation
- Q(e);P_SPINS(h),XP(F)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- B(c);XP(F)::QAB1(G)
- Q(e);P_SPINS(h)::QAB1(G)
- B(c);::QAB1(G)
- Refutation
- Q(e);P_SPINS(h),XP(F)
- Try
- Q(G);
- Threat
- QAB1(G)
- Vars
- Q(e);P_SPINQ(e),P_SPINS(h),XP(F)::S(H)
- S(h);P_PINS(H),P_SPINQ(e),SBLOCK::R1(D),XB(c)
- S(h);OGATE,P_PINS(H),P_SPINQ(e)::B(K)
- Refutation
- P(f);XQ(G)
- Try
- P(F);CHECK,XQ(e)
- Vars
- S(h);OGATE,P_PINS(H),P_SPINS(h)::B(K)
- Refutation
- B(c);P_SPINB(c)
- Try
- Actual
- P(C);
- Threat
- QAB(G)
- Vars
- K(d);P_SPINB(c),S_FLIGHT::S(E)
- Q(e);P_SPINQ(e),P_SPINS(h),XP(F)::S(H)
- S(h);OGATE,P_PINS(H),P_SPINQ(e),P_SPINS(h),XP(F)::B(K)
- S(h);P_PINS(H),P_SPINQ(e),SBLOCK::R1(D),XB(c)
- S(h);OGATE,P_PINS(H),P_SPINQ(e)::B(K)
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).