MESON Chess Problem Database
Problem Display
PID: 204440 (3BR1b1/1q2rR2/4nnNK/QP1B1kp1/1p6/2r1pPb1/2N3P1/8 w - - 0 1)
Stemberger, R
Weltblatt, 1925
#2
11 + 11
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qa6
- 2.Be4#
- 1...Qc8
- 2.Be4#
- 1...Qxb5
- 2.Be4#
- 1...Qb6
- 2.Be4#
- 1...Qa7
- 2.Be4#
- 1...Qc7
- 2.Be4#
- 1...Qd7
- 2.Be4#
- 1...Qb8
- 2.Be4#
- 1...Rc4
- 2.Sxe3#
- 1...Rc5
- 2.Sxe3#
- 1...Rc6
- 2.Sxe3#
- 2.Be4#
- 1...Rcc7
- 2.Sxe3#
- 1...Rc8
- 2.Sxe3#
- 1...Rec7
- 2.Bxe6#
- 2.Rxf6#
- 1...Rd7
- 2.Bxe6#
- 2.Rxf6#
- 1...Rxf7
- 2.Bxe6#
- 1...Rxe8
- 2.Rxf6#
- 1...Be1
- 2.g4#
- 1...Bf2
- 2.g4#
- 1...Bh2
- 2.g4#
- 1...Bf4
- 2.g4#
- 1...Bh4
- 2.g4#
- 1...Be5
- 2.g4#
- 1...Bd6
- 2.g4#
- 1...Bc7
- 2.g4#
- 1...Bb8
- 2.g4#
- 1...Sd4
- 2.Sxd4#
- 1...Sf4
- 2.Sd4#
- 1...Sc5
- 2.Sd4#
- 1...Sc7
- 2.Sd4#
- 1...Sg7
- 2.Sd4#
- 1...Sxd8
- 2.Sd4#
- 1...Sf8
- 2.Sd4#
- 1...Qa6
- Tries
- 1.Bxe6+?
- 1...Rxe6
- 2.Sd4#
- 1...Kxe6!
- 1...Rxe6
- 1.Bc7?
- threat
- 2.Sxe7#
- 1...Qxc7
- 2.Be4#
- 1...Rcxc7
- 2.Sxe3#
- 1...Rexc7
- 2.Bxe6#
- 1...Rxf7
- 2.Bxe6#
- 1...Bxc7
- 2.g4#
- 1...Sxc7
- 2.Sd4#
- 1...Rd7
- 2.Bxe6#
- 1...Be5
- 2.g4#
- 1...Bd6
- 2.g4#
- 1...Rxe8!
- threat
- 1.Bxe7?
- threat
- 2.Rxf6#
- 1...Qxe7
- 2.Be4#
- 1...Be5
- 2.g4#
- 1...Bxf7!
- threat
- 1.Qxb4?
- threat
- 2.Qe4#
- 2.Qg4#
- 1...Qxd5
- 2.Qg4#
- 1...Rxf7
- 2.Bxe6#
- 1...Sxd8
- 2.Sd4#
- 2.Qg4#
- 1...Rc4
- 2.Sxe3#
- 1...Bf4
- 2.Qe4#
- 2.g4#
- 1...Sd4
- 2.Sxd4#
- 1...Sf4
- 2.Sd4#
- 1...Sc5
- 2.Sd4#
- 2.Qg4#
- 1...Sc7
- 2.Sd4#
- 2.Qg4#
- 1...Sg7
- 2.Sd4#
- 2.Qg4#
- 1...Sf8
- 2.Sd4#
- 2.Qg4#
- 1...g4
- 2.Qe4#
- 2.Qxg4#
- 2.fxg4#
- 1...Bxf7!
- threat
- 1.b6?
- threat
- 2.Be4#
- 1...Sxd8
- 2.Sd4#
- 1...Rc5
- 2.Sxe3#
- 1...Be5
- 2.g4#
- 1...Sd4
- 2.Sxd4#
- 1...Sf4
- 2.Sd4#
- 1...Sc5
- 2.Sd4#
- 1...Sc7
- 2.Sd4#
- 1...Sg7
- 2.Sd4#
- 1...Sf8
- 2.Sd4#
- 1...Qxd5!
- threat
- 1.Bxe6+?
- Keys
- 1.Qc7!
- threat
- 2.Sxe7#
- 1...Qxc7
- 2.Be4#
- 1...Rcxc7
- 2.Sxe3#
- 1...Rexc7
- 2.Bxe6#
- 2.Rxf6#
- 1...Rxf7
- 2.Bxe6#
- 1...Rxe8
- 2.Rxf6#
- 1...Bxc7
- 2.g4#
- 1...Sxc7
- 2.Sd4#
- 1...Rd7
- 2.Bxe6#
- 2.Rxf6#
- 1...Be5
- 2.Qxe5#
- 2.g4#
- 1...Bd6
- 2.g4#
- threat
- 1.Qc7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 23
- Sets
- Q(i);N_GUARD::B(F)
- Q(i);N_GUARD,XP(E)::B(F)
- R(a);N_GUARD::S(A),XP(b)
- R(j);N_GUARD,N_SPINS(h),XR(I)::B(F),XS(g)
- R(j);XR(K)::R1(I),XS(h)
- B(c);OGATE::P(B)
- S(g);N_GUARD::S(A),XS(g)
- S(g);N_GUARD::S(A)
- S(g);N_GUARD,XB(J)::S(A)
- Tries
- Try
- B(F);CHECK,XS(g)
- Vars
- R(j);XB(F)::S(A)
- Refutation
- K(e);N_SPINS(h),P_SPINR(j),S_FLIGHT,XB(F)
- Try
- B(J);
- Threat
- S(G),XR(j)
- Vars
- Q(i);N_GUARD,XB(J)::B(F)
- R(a);N_GUARD,XB(J)::S(A),XP(b)
- R(j);N_GUARD,XB(J)::B(F),XS(g)
- R(j);N_GUARD,N_SPINS(h),XR(I)::B(F),XS(g)
- B(c);OGATE,XB(J)::P(B)
- S(g);N_GUARD,XB(J)::S(A)
- R(j);N_GUARD::B(F),XS(g)
- B(c);OGATE::P(B)
- Refutation
- R(j);XR(K)
- Try
- B(J);XR(j)
- Threat
- R1(I),XS(h)
- Vars
- Q(i);N_GUARD,XB(J)::B(F)
- B(c);OGATE::P(B)
- Refutation
- B(k);N_SPINS(h),XR(I)
- Try
- Q(D);XP(d)
- Threat
- DUALS(2)
- Vars
- Q(i);XB(F)::QAB1(D)
- R(j);N_GUARD,N_SPINS(h),XR(I)::B(F),XS(g)
- R(a);N_GUARD::S(A),XP(b)
- S(g);N_GUARD::S(A),XS(g)
- S(g);N_GUARD::S(A)
- Refutation
- B(k);N_SPINS(h),XR(I)
- Try
- P(E);
- Threat
- QAR(D)+B(F),DCHECK
- Vars
- S(g);N_GUARD,XB(J)::S(A)
- R(a);N_GUARD::S(A),XP(b)
- B(c);OGATE::P(B)
- S(g);N_GUARD::S(A),XS(g)
- S(g);N_GUARD::S(A)
- Refutation
- Q(i);P_SPINQ(i),XB(F)
- Try
- Actual
- Q(D);
- Threat
- S(G),XR(j)
- Vars
- Q(i);N_GUARD,XQ(D)::B(F)
- R(a);N_GUARD,XQ(D)::S(A),XP(b)
- R(j);N_GUARD,N_SPINS(h),XR(I)::B(F),XS(g)
- R(j);XR(K)::R1(I),XS(h)
- B(c);OGATE,XQ(D)::P(B)
- S(g);N_GUARD,XQ(D)::S(A)
- B(c);OGATE::P(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).