MESON Chess Problem Database
Problem Display
PID: 240151 (8/2nn2Q1/1p4PK/1Rb5/2pNBkbR/2N1r3/2PB3P/4r3 w - - 0 1)
Zilahi, Zoltan
Schakend Nederland, 1966
#2
11 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sde2#
- 1...Rb1
- 2.Sde2#
- 1...Rc1
- 2.Sde2#
- 1...Rd1
- 2.Sde2#
- 1...Rf1
- 2.Sde2#
- 1...Rg1
- 2.Sde2#
- 1...Rh1
- 2.Sde2#
- 1...Re2
- 2.Sdxe2#
- 1...Ba3
- 2.Rf5#
- 1...Bb4
- 2.Rf5#
- 1...Bxd4
- 2.Rf5#
- 1...Bd6
- 2.Rf5#
- 1...Be7
- 2.Rf5#
- 1...Bf8
- 2.Rf5#
- 1...Sxb5
- 2.Se6#
- 1...Sd5
- 2.Se6#
- 1...Sa6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sa8
- 2.Se6#
- 1...Se8
- 2.Se6#
- 1...Se5
- 2.Qf6#
- 1...Sf6
- 2.Qxf6#
- 1...Sb8
- 2.Qf6#
- 1...Sf8
- 2.Qf6#
- 1...Ra1
- Tries
- 1.Bc1?
- 1...Bxd4
- 2.Rf5#
- 1...Sxb5
- 2.Se6#
- 1...Sf6
- 2.Qxf6#
- 1...Rd1
- 2.Sde2#
- 1...Rf1
- 2.Sde2#
- 1...Rg1
- 2.Sde2#
- 1...Rh1
- 2.Sde2#
- 1...Re2
- 2.Sdxe2#
- 1...Ba3
- 2.Rf5#
- 1...Bb4
- 2.Rf5#
- 1...Bd6
- 2.Rf5#
- 1...Be7
- 2.Rf5#
- 1...Bf8
- 2.Rf5#
- 1...Sd5
- 2.Se6#
- 1...Sa6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sa8
- 2.Se6#
- 1...Se8
- 2.Se6#
- 1...Se5
- 2.Qf6#
- 1...Sb8
- 2.Qf6#
- 1...Sf8
- 2.Qf6#
- 1...Rxc1!
- 1...Bxd4
- 1.Bh1?
- 1...Bxd4
- 2.Qxd4#
- 1...Sxb5
- 2.Sd5#
- 1...Sf6
- 2.Qxf6#
- 1...Ra1
- 2.Sce2#
- 1...Rb1
- 2.Sce2#
- 1...Rc1
- 2.Sce2#
- 1...Rd1
- 2.Sce2#
- 1...Rf1
- 2.Sce2#
- 1...Rg1
- 2.Sce2#
- 1...Re2
- 2.Scxe2#
- 1...Ba3
- 2.Rf5#
- 1...Bb4
- 2.Rf5#
- 1...Bd6
- 2.Rf5#
- 1...Be7
- 2.Rf5#
- 1...Bf8
- 2.Rf5#
- 1...Sd5
- 2.Sxd5#
- 1...Sa6
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sa8
- 2.Sd5#
- 1...Se8
- 2.Sd5#
- 1...Se5
- 2.Qf6#
- 1...Sb8
- 2.Qf6#
- 1...Sf8
- 2.Qf6#
- 1...Rxh1!
- 1...Bxd4
- 1.Bd3?
- 1...Bxd4
- 2.Rf5#
- 1...Sxb5
- 2.Sd5#
- 1...Sf6
- 2.Qxf6#
- 1...Ra1
- 2.Sce2#
- 1...Rb1
- 2.Sce2#
- 1...Rc1
- 2.Sce2#
- 1...Rd1
- 2.Sce2#
- 1...Rf1
- 2.Sce2#
- 1...Rg1
- 2.Sce2#
- 1...Rh1
- 2.Sce2#
- 1...Re2
- 2.Scxe2#
- 1...Ba3
- 2.Rf5#
- 1...Bb4
- 2.Rf5#
- 1...Bd6
- 2.Rf5#
- 1...Be7
- 2.Rf5#
- 1...Bf8
- 2.Rf5#
- 1...Sd5
- 2.Sxd5#
- 1...Sa6
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sa8
- 2.Sd5#
- 1...Se8
- 2.Sd5#
- 1...Se5
- 2.Qf6#
- 1...Sb8
- 2.Qf6#
- 1...Sf8
- 2.Qf6#
- 1...cxd3!
- 1...Bxd4
- 1.Bf3?
- threat
- 2.Rxg4#
- 1...Sf6
- 2.Qxf6#
- 1...Rg1
- 2.Sce2#
- 1...Se5
- 2.Qf6#
- 1...Bxd4!
- threat
- 1.Rxc5?
- threat
- 2.Rf5#
- 1...Sxc5
- 2.Qf6#
- 2.Qxc7#
- 1...Sd5
- 2.Se6#
- 1...Se5
- 2.Qxe5#
- 2.Qf6#
- 1...bxc5!
- threat
- 1.Qh8?
- 1...Bxd4
- 2.Rf5#
- 1...Sxb5
- 2.Se6#
- 1...Sf6
- 2.Qxf6#
- 1...Ra1
- 2.Sde2#
- 1...Rb1
- 2.Sde2#
- 1...Rc1
- 2.Sde2#
- 1...Rd1
- 2.Sde2#
- 1...Rf1
- 2.Sde2#
- 1...Rg1
- 2.Sde2#
- 1...Rh1
- 2.Sde2#
- 1...Re2
- 2.Sdxe2#
- 1...Ba3
- 2.Rf5#
- 1...Bb4
- 2.Rf5#
- 1...Bd6
- 2.Rf5#
- 1...Be7
- 2.Rf5#
- 1...Sd5
- 2.Se6#
- 1...Sa6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sa8
- 2.Se6#
- 1...Se8
- 2.Se6#
- 1...Se5
- 2.Qf6#
- 1...Sb8
- 2.Qf6#
- 1...Sf8
- 2.Qf6#
- 1...Bf8+!
- 1...Bxd4
- 1.Qe7?
- threat
- 2.Qg5#
- 1...Bxe7
- 2.Rf5#
- 1...Sf6
- 2.Qxf6#
- 1...Se6!
- threat
- 1.Qf7+?
- 1...Sf6
- 2.Qxf6#
- 1...Ke5!
- 1...Sf6
- 1.Bc1?
- Keys
- 1.Bg2!
- 1...Bxd4
- 2.Qxd4#
- 1...Sxb5
- 2.Sd5#
- 1...Sf6
- 2.Qxf6#
- 1...Ra1
- 2.Sce2#
- 1...Rb1
- 2.Sce2#
- 1...Rc1
- 2.Sce2#
- 1...Rd1
- 2.Sce2#
- 1...Rf1
- 2.Sce2#
- 1...Rg1
- 2.Sce2#
- 1...Rh1
- 2.Sce2#
- 1...Re2
- 2.Scxe2#
- 1...Ba3
- 2.Rf5#
- 1...Bb4
- 2.Rf5#
- 1...Bd6
- 2.Rf5#
- 1...Be7
- 2.Rf5#
- 1...Bf8
- 2.Rf5#
- 1...Sd5
- 2.Sxd5#
- 1...Sa6
- 2.Sd5#
- 1...Se6
- 2.Sd5#
- 1...Sa8
- 2.Sd5#
- 1...Se8
- 2.Sd5#
- 1...Se5
- 2.Qf6#
- 1...Sb8
- 2.Qf6#
- 1...Sf8
- 2.Qf6#
- 1...Bxd4
- 1.Bg2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 15
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::S(E)
- R(a);N_GUARD::S(E),XR(a)
- B(f);OGATE::R1(H)
- B(f);OGATE,XS(E)::R1(H)
- B(f);OGATE,P_PINQ(K)::R1(H)
- S(h);N_GUARD,XR(H)::S(E)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- S(i);N_GUARD::QAR2(K)
- S(i);N_GUARD::QAR2(K),XS(i)
- Tries
- Try
- B(B);
- Vars
- B(f);OGATE,XS(E)::R1(H)
- S(h);N_GUARD,XR(H)::S(E)
- S(i);N_GUARD::QAR2(K),XS(i)
- R(a);N_GUARD::S(E)
- R(a);N_GUARD::S(E),XR(a)
- B(f);OGATE::R1(H)
- B(f);OGATE,P_PINQ(K)::R1(H)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- S(i);N_GUARD::QAR2(K)
- Refutation
- R(a);N_SPINR(b),XB(B)
- Try
- B(F);
- Vars
- B(f);OGATE,XS(E)::QAR2(K),XB(f)
- S(h);N_GUARD,XR(H)::S(D)
- S(i);N_GUARD::QAR2(K),XS(i)
- R(a);N_GUARD::S(D)
- R(a);N_GUARD::S(D),XR(a)
- B(f);OGATE::R1(H)
- B(f);OGATE,P_PINQ(K)::R1(H)
- S(h);N_GUARD::S(D),XS(h)
- S(h);N_GUARD::S(D)
- S(i);N_GUARD::QAR2(K)
- Refutation
- R(a);XB(F)
- Try
- B(F);
- Vars
- B(f);OGATE,XS(E)::R1(H)
- S(h);N_GUARD,XR(H)::S(D)
- S(i);N_GUARD::QAR2(K),XS(i)
- R(a);N_GUARD::S(D)
- R(a);N_GUARD::S(D),XR(a)
- B(f);OGATE::R1(H)
- B(f);OGATE,P_PINQ(K)::R1(H)
- S(h);N_GUARD::S(D),XS(h)
- S(h);N_GUARD::S(D)
- S(i);N_GUARD::QAR2(K)
- Refutation
- P(c);XB(F)
- Try
- B(F);
- Threat
- R1(G),XB(e)
- Vars
- S(i);N_GUARD::QAR2(K),XS(i)
- R(a);N_GUARD::S(D)
- S(i);N_GUARD::QAR2(K)
- Refutation
- B(f);XS(E)
- Try
- R(H);XB(f)
- Threat
- R1(H)
- Vars
- S(h);N_GUARD::S(E)
- Refutation
- P(g);XR(H)
- Try
- Q(K);
- Vars
- B(f);OGATE,XS(E)::R1(H)
- S(h);N_GUARD,XR(H)::S(E)
- S(i);N_GUARD::QAR2(K),XS(i)
- R(a);N_GUARD::S(E)
- R(a);N_GUARD::S(E),XR(a)
- B(f);OGATE::R1(H)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- S(i);N_GUARD::QAR2(K)
- Refutation
- B(f);CHECK
- Try
- Q(K);
- Threat
- QAB1(K)
- Vars
- B(f);OGATE,XQ(K)::R1(H)
- S(i);N_GUARD::QAR2(K),XS(i)
- Refutation
- S(h);
- Try
- Q(K);CHECK
- Vars
- S(i);N_GUARD,P_SPINS(i)::QAR2(K),XS(i)
- Refutation
- K(d);N_SPINB(e),N_SPINR(b),P_SPINB(f),S_FLIGHT
- Try
- Actual
- B(F);
- Vars
- B(f);OGATE,XS(E)::QAR2(K),XB(f)
- S(h);N_GUARD,XR(H)::S(D)
- S(i);N_GUARD::QAR2(K),XS(i)
- R(a);N_GUARD::S(D)
- R(a);N_GUARD::S(D),XR(a)
- B(f);OGATE::R1(H)
- B(f);OGATE,P_PINQ(K)::R1(H)
- S(h);N_GUARD::S(D),XS(h)
- S(h);N_GUARD::S(D)
- S(i);N_GUARD::QAR2(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).