MESON Chess Problem Database
Problem Display
PID: 254369 (Kn6/3pr3/1R1p4/3kpQ1R/4rP2/1P1pBP1n/B3N1q1/b7 w - - 0 1)
Zarur, Almiro Elias
Problemas, 2021
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.fxe4#
- 1...Qg1
- 2.fxe4#
- 1...Qxe2
- 2.fxe4#
- 1...Qf2
- 2.fxe4#
- 1...Qh2
- 2.fxe4#
- 1...Qg3
- 2.fxe4#
- 1...Qg4
- 2.fxe4#
- 1...Qg5
- 2.fxe4#
- 1...Qg6
- 2.fxe4#
- 1...Qg7
- 2.fxe4#
- 1...Qg8
- 2.fxe4#
- 1...Rxe3
- 2.b4#
- 1...Ra4+
- 2.bxa4#
- 1...Rc4
- 2.bxc4#
- 1...Re6
- 2.Qxe4#
- 1...Rf7
- 2.Qxf7#
- 1...Bc3
- 2.Sxc3#
- 1...Bd4
- 2.b4#
- 1...Sc6
- 2.Rb5#
- 1...Qf1
- Tries
- 1.Rh6?
- threat
- 2.Rbxd6#
- 2.Rhxd6#
- 2.Qxe4#
- 1...Ra4+
- 2.bxa4#
- 1...Qxf3
- 2.Rbxd6#
- 2.Rhxd6#
- 1...Rxe3
- 2.b4#
- 1...Rxf4
- 2.Rbxd6#
- 2.Rhxd6#
- 1...Bd4
- 2.b4#
- 1...Qg6
- 2.fxe4#
- 1...Rb4
- 2.Rbxd6#
- 2.Rhxd6#
- 1...Rc4
- 2.Rbxd6#
- 2.Rhxd6#
- 2.bxc4#
- 1...Re6
- 2.Qxe4#
- 1...Sf2
- 2.Rbxd6#
- 2.Rhxd6#
- 1...Sg5
- 2.Rbxd6#
- 2.Rhxd6#
- 1...Sc6
- 2.Rb5#
- 2.Qxe4#
- 1...Rd4!
- threat
- 1.Qg6?
- threat
- 2.Rxd6#
- 2.Qxd6#
- 1...Ra4+
- 2.bxa4#
- 1...Rxe3
- 2.Qxd6#
- 2.b4#
- 1...Rd4
- 2.Qxd6#
- 1...Bd4
- 2.Qxd6#
- 2.b4#
- 1...Re6
- 2.Qxe4#
- 1...Sc6
- 2.Rb5#
- 1...Qxg6!
- threat
- 1.Qf6?
- threat
- 2.Rxd6#
- 2.Qxd6#
- 1...Ra4+
- 2.bxa4#
- 1...Rxe3
- 2.Qxd6#
- 2.b4#
- 1...Rd4
- 2.Qxd6#
- 1...Bd4
- 2.Qxd6#
- 2.b4#
- 1...Qg6
- 2.Rxd6#
- 1...Sc6
- 2.Rb5#
- 1...Re6!
- threat
- 1.Rh6?
- Keys
- 1.fxe5!
- threat
- 2.Rxd6#
- 1...Ra4+
- 2.bxa4#
- 1...Rxe3
- 2.b4#
- 1...R4xe5
- 2.b4#
- 1...R7xe5
- 2.Qf7#
- 1...Bxe5
- 2.Sc3#
- 1...dxe5
- 2.Qxe4#
- 1...Rd4
- 2.e6#
- 1...Bd4
- 2.b4#
- 1...Re6
- 2.Qxe4#
- 1...Qg6
- 2.fxe4#
- 1...Sc6
- 2.Rb5#
- threat
- 1.fxe5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 13
- Sets
- Q(b);N_GUARD::P(E),XR(e)
- Q(b);N_GUARD,XS(B)::P(E),XR(e)
- R(e);N_GUARD,XB(D)::B(A)+P(C)
- R(e);CHECK,OGATE::B(A)+P(C),XR(e)
- R(e);OGATE::P(C),XR(e)
- R(j);SBLOCK::QAB1(G),XR(e)
- R(j);N_GUARD::QAB(G),XR(j)
- B(a);N_GUARD::S(B),XB(a)
- B(a);S_CUTR(e)::B(A)+P(C)
- S(k);SBLOCK::R(I)
- Tries
- Try
- R(H);
- Threat
- DUALS(3)
- Vars
- R(e);CHECK,OGATE::B(A)+P(C),XR(e)
- R(e);N_GUARD,XB(D)::B(A)+P(C)
- B(a);S_CUTR(e)::B(A)+P(C)
- Q(b);N_GUARD::P(E),XR(e)
- R(j);::QAB1(G),XR(e)
- Refutation
- R(e);
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(e);CHECK,OGATE::B(A)+P(C),XR(e)
- R(e);::QAR1(G),XP(h)
- R(j);SBLOCK::QAB1(G),XR(e)
- S(k);SBLOCK::R(I)
- Refutation
- Q(b);XQ(G)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(e);CHECK,OGATE::B(A)+P(C),XR(e)
- R(e);::QAR1(G),XP(h)
- Q(b);::R1(I),XP(h)
- S(k);SBLOCK::R(I)
- Refutation
- R(j);
- Try
- Actual
- P(F);XP(g)
- Threat
- R1(I),XP(h)
- Vars
- R(e);CHECK,OGATE::B(A)+P(C),XR(e)
- R(e);N_GUARD,XB(D)::B(A)+P(C)
- R(e);N_GUARD,P_SPINR(e),XP(F)::B(A)+P(C)
- R(j);N_GUARD,P_SPINR(j),XP(F)::QAB(G)
- B(a);N_GUARD,P_SPINB(a),XP(F)::S(B)
- P(h);P_SPINP(h),XP(F)::QAB1(G),XR(e)
- R(e);N_GUARD,S_CUTB(a)::QAR(G)+P(F)
- B(a);S_CUTR(e)::B(A)+P(C)
- R(j);SBLOCK::QAB1(G),XR(e)
- Q(b);N_GUARD::P(E),XR(e)
- S(k);SBLOCK::R(I)
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).