MESON Chess Problem Database
Problem Display
PID: 194781 (B2n4/2R1R2Q/K3N1r1/1P3kP1/2p1pPb1/p1N4P/3B4/4r1b1 w - - 0 1)
Witt, Andreas
Die Schwalbe, 2018
#2
12 + 9
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Bxe4#
- 1...Rb1
- 2.Bxe4#
- 1...Rc1
- 2.Bxe4#
- 1...Rd1
- 2.Bxe4#
- 1...Rf1
- 2.Bxe4#
- 1...Re3
- 2.Rc5#
- 1...Bh2
- 2.Rc5#
- 1...Be3
- 2.Bxe4#
- 1...Bc5
- 2.Rxc5#
- 1...Bb6
- 2.Sg7#
- 1...Be2
- 2.Bxe4#
- 1...Bxh3
- 2.Qxh3#
- 1...Sc6
- 2.Sg7#
- 1...Sxe6
- 2.Rf7#
- 1...e3
- 2.Be4#
- 2.Rc5#
- 1...Ra1
- Tries
- 1.Sxe4?
- threat
- 2.Sg3#
- 2.Sd6#
- 1...Bxh3
- 2.Qxh3#
- 1...Sb7
- 2.Sg3#
- 1...Re3
- 2.Sd6#
- 2.Rc5#
- 1...Bf2
- 2.Sd6#
- 1...Bh2
- 2.Sd6#
- 2.Rc5#
- 1...Bc5
- 2.Sg3#
- 2.Rxc5#
- 1...Sf7
- 2.Sg3#
- 1...Rxe4!
- threat
- 1.Be3?
- threat
- 2.Bxe4#
- 2.Rc5#
- 1...Rxe3
- 2.Rc5#
- 1...Bxe3
- 2.Bxe4#
- 1...Bxh3
- 2.Qxh3#
- 1...Sxe6
- 2.Bxe4#
- 2.Rf7#
- 1...Rd1
- 2.Bxe4#
- 1...Bf3
- 2.Rc5#
- 1...Sc6
- 2.Sg7#
- 1...Sf7
- 2.Bxe4#
- 1...Sb7!
- threat
- 1.Bc6?
- threat
- 2.Sg7#
- 1...Bxh3
- 2.Qxh3#
- 1...Sxe6
- 2.Rf7#
- 1...Be3
- 2.Bxe4#
- 1...Bd4
- 2.Sxd4#
- 1...e3
- 2.Be4#
- 1...Re3!
- threat
- 1.Rc6?
- threat
- 2.Sg7#
- 1...Bxh3
- 2.Qxh3#
- 1...Sxe6
- 2.Rf7#
- 1...Re3
- 2.Rc5#
- 1...Bd4
- 2.Sxd4#
- 1...e3
- 2.Rc5#
- 1...Be3!
- threat
- 1.Rf7+?
- 1...Kxe6
- 2.Qxg6#
- 1...Sxf7!
- 1...Kxe6
- 1.Rg7?
- threat
- 2.Qxg6#
- 1...Kxe6
- 2.Qxg6#
- 1...Bxh3
- 2.Qxh3#
- 1...Bh5!
- threat
- 1.Qf7+?
- 1...Rf6
- 2.Qxf6#
- 1...Sxf7!
- 1...Rf6
- 1.Sxe4?
- Keys
- 1.b6!
- threat
- 2.Sg7#
- 1...Bxh3
- 2.Qxh3#
- 1...Sxe6
- 2.Rf7#
- 1...Re3
- 2.Rc5#
- 1...Be3
- 2.Bxe4#
- 1...Bd4
- 2.Sxd4#
- 1...e3
- 2.Be4#
- 2.Rc5#
- threat
- 1.b6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 10
- Sets
- R(a);N_GUARD::B(L),XP(e)
- R(a);S_CUTB(b)::R(I)
- B(b);N_GUARD::R(I)
- B(b);S_CUTR(a)::B(L),XP(e)
- B(b);N_GUARD::R(I),XB(b)
- B(b);N_PINS(H)::S(H)
- B(f);S_CUTR(a)::B(L),XP(e)
- B(f);OGATE,XP(C)::QAB(K),XB(f)
- S(i);N_PINS(H)::S(H)
- S(i);N_GUARD,SBLOCK,XS(H)::R(J)
- Tries
- Try
- S(B);XP(e)
- Threat
- DUALS(2)
- Vars
- B(f);OGATE,XP(C)::QAB(K),XB(f)
- S(i);::S(B)
- B(b);::S(B)
- Refutation
- R(a);XS(B)
- Try
- B(A);
- Threat
- DUALS(2)
- Vars
- R(a);XB(A)::R(I)
- B(b);XB(A)::B(L),XP(e)
- B(f);OGATE,XP(C)::QAB(K),XB(f)
- R(a);::B(L),XP(e)
- B(f);::R(I)
- S(i);N_PINS(H)::S(H)
- S(i);::B(L),XP(e)
- Refutation
- S(i);
- Try
- B(L);N_SPINS(H)
- Threat
- S(H)
- Vars
- B(f);OGATE,XP(C)::QAB(K),XB(f)
- S(i);N_GUARD,SBLOCK,XS(H)::R(J)
- B(b);S_CUTR(a)::B(L),XP(e)
- B(b);N_GUARD::S(H),XB(b)
- P(e);S_CUTR(a)::B(L)
- Refutation
- R(a);
- Try
- R(I);N_SPINS(H)
- Threat
- S(H)
- Vars
- B(f);OGATE,XP(C)::QAB(K),XB(f)
- S(i);N_GUARD,XS(H)::R(J)
- R(a);S_CUTB(b)::R(I)
- B(b);N_GUARD::S(H),XB(b)
- P(e);S_CUTB(b)::R(I)
- Refutation
- B(b);
- Try
- R(J);CHECK
- Vars
- K(g);N_SPINR(h),S_FLIGHT,XS(H)::QAR2(K),XR(h)
- Refutation
- S(i);XR(J)
- Try
- R(J);
- Threat
- QAB1(K),XR(h)
- Vars
- K(g);N_SPINR(h),S_FLIGHT,XS(H)::QAR2(K),XR(h)
- B(f);OGATE,XP(C)::QAB(K),XB(f)
- Refutation
- B(f);
- Try
- Q(K);CHECK,N_PINR(h)
- Vars
- R(h);N_GUARD,P_SPINR(h)::QAR1(K),XR(h)
- Refutation
- S(i);XQ(K)
- Try
- Actual
- P(E);N_SPINS(H)
- Threat
- S(H)
- Vars
- B(f);OGATE,XP(C)::QAB(K),XB(f)
- S(i);N_GUARD,SBLOCK,XS(H)::R(J)
- R(a);S_CUTB(b)::R(I)
- B(b);S_CUTR(a)::B(L),XP(e)
- B(b);N_GUARD::S(H),XB(b)
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).