MESON Chess Problem Database
Problem Display
PID: 232777 (8/5p1K/b4P2/p1p1n2Q/R1PkP3/N7/1P1P1N2/2r5 w - - 0 1)
Hoy, Paul
Freie Presse, 1974
#2
10 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sc2#
- 1...Rb1
- 2.Sc2#
- 1...Rd1
- 2.Sc2#
- 1...Re1
- 2.Sc2#
- 1...Rf1
- 2.Sc2#
- 1...Rg1
- 2.Sc2#
- 1...Rh1
- 2.Sc2#
- 1...Rc2
- 2.Sxc2#
- 1...Rc3
- 2.bxc3#
- 1...Rxc4
- 2.Sc2#
- 1...Bxc4
- 2.Sb5#
- 1...Bb5
- 2.Sxb5#
- 1...Bb7
- 2.Sb5#
- 1...Bc8
- 2.Sb5#
- 1...Sd3
- 2.Qd5#
- 1...Sf3
- 2.Qd5#
- 1...Sxc4
- 2.Qd5#
- 1...Sg4
- 2.Qd5#
- 1...Sc6
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...Sd7
- 2.Qd5#
- 1...Ra1
- Tries
- 1.Kh6?
- 1...Rxc4
- 2.Sc2#
- 1...Bxc4
- 2.Sb5#
- 1...Sxc4
- 2.Qd5#
- 1...Ra1
- 2.Sc2#
- 1...Rb1
- 2.Sc2#
- 1...Rd1
- 2.Sc2#
- 1...Re1
- 2.Sc2#
- 1...Rf1
- 2.Sc2#
- 1...Rg1
- 2.Sc2#
- 1...Rh1
- 2.Sc2#
- 1...Rc2
- 2.Sxc2#
- 1...Rc3
- 2.bxc3#
- 1...Bb5
- 2.Sxb5#
- 1...Bb7
- 2.Sb5#
- 1...Bc8
- 2.Sb5#
- 1...Sd3
- 2.Qd5#
- 1...Sf3
- 2.Qd5#
- 1...Sc6
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...Sd7
- 2.Qd5#
- 1...Sg4+!
- 1...Rxc4
- 1.Kg7?
- 1...Rxc4
- 2.Sc2#
- 1...Bxc4
- 2.Sb5#
- 1...Sxc4
- 2.Qd5#
- 1...Ra1
- 2.Sc2#
- 1...Rb1
- 2.Sc2#
- 1...Rd1
- 2.Sc2#
- 1...Re1
- 2.Sc2#
- 1...Rf1
- 2.Sc2#
- 1...Rh1
- 2.Sc2#
- 1...Rc2
- 2.Sxc2#
- 1...Rc3
- 2.bxc3#
- 1...Bb5
- 2.Sxb5#
- 1...Bb7
- 2.Sb5#
- 1...Bc8
- 2.Sb5#
- 1...Sd3
- 2.Qd5#
- 1...Sf3
- 2.Qd5#
- 1...Sg4
- 2.Qd5#
- 1...Sc6
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...Sd7
- 2.Qd5#
- 1...Rg1+!
- 1...Rxc4
- 1.Kg8?
- 1...Rxc4
- 2.Sc2#
- 1...Bxc4
- 2.Sb5#
- 1...Sxc4
- 2.Qd5#
- 1...Ra1
- 2.Sc2#
- 1...Rb1
- 2.Sc2#
- 1...Rd1
- 2.Sc2#
- 1...Re1
- 2.Sc2#
- 1...Rf1
- 2.Sc2#
- 1...Rh1
- 2.Sc2#
- 1...Rc2
- 2.Sxc2#
- 1...Rc3
- 2.bxc3#
- 1...Bb5
- 2.Sxb5#
- 1...Bb7
- 2.Sb5#
- 1...Bc8
- 2.Sb5#
- 1...Sd3
- 2.Qd5#
- 1...Sf3
- 2.Qd5#
- 1...Sg4
- 2.Qd5#
- 1...Sc6
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...Sd7
- 2.Qd5#
- 1...Rg1+!
- 1...Rxc4
- 1.Kh8?
- 1...Rxc4
- 2.Sc2#
- 1...Bxc4
- 2.Sb5#
- 1...Sxc4
- 2.Qd5#
- 1...Ra1
- 2.Sc2#
- 1...Rb1
- 2.Sc2#
- 1...Rd1
- 2.Sc2#
- 1...Re1
- 2.Sc2#
- 1...Rf1
- 2.Sc2#
- 1...Rg1
- 2.Sc2#
- 1...Rh1
- 2.Sc2#
- 1...Rc2
- 2.Sxc2#
- 1...Rc3
- 2.bxc3#
- 1...Bb5
- 2.Sxb5#
- 1...Bb7
- 2.Sb5#
- 1...Bc8
- 2.Sb5#
- 1...Sd3
- 2.Qd5#
- 1...Sf3
- 2.Qd5#
- 1...Sg4
- 2.Qd5#
- 1...Sc6
- 2.Qd5#
- 1...Sd7
- 2.Qd5#
- 1...Sg6+!
- 1...Rxc4
- 1.Qf5?
- 1...Rxc4
- 2.Sc2#
- 1...Bxc4
- 2.Sb5#
- 1...Sxc4
- 2.Qd5#
- 1...Ra1
- 2.Sc2#
- 1...Rb1
- 2.Sc2#
- 1...Rd1
- 2.Sc2#
- 1...Re1
- 2.Sc2#
- 1...Rf1
- 2.Sc2#
- 1...Rg1
- 2.Sc2#
- 1...Rc2
- 2.Sxc2#
- 1...Rc3
- 2.bxc3#
- 1...Bb5
- 2.Sxb5#
- 1...Bb7
- 2.Sb5#
- 1...Bc8
- 2.Sb5#
- 1...Sd3
- 2.Qd5#
- 1...Sf3
- 2.Qd5#
- 1...Sg4
- 2.Qd5#
- 1...Sc6
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...Sd7
- 2.Qd5#
- 1...Rh1+!
- 1...Rxc4
- 1.Qg5?
- threat
- 2.Qe3#
- 1...Sxc4
- 2.Qd5#
- 1...Re1
- 2.Sc2#
- 1...Rc3
- 2.bxc3#
- 2.dxc3#
- 1...Sd3
- 2.Qd5#
- 1...Sf3
- 2.Qd5#
- 1...Sg4
- 2.Qd5#
- 1...Sc6
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...Sd7
- 2.Qd5#
- 1...Rh1+!
- threat
- 1.b3?
- 1...Rxc4
- 2.Sc2#
- 1...Bxc4
- 2.Sb5#
- 1...Sxc4
- 2.Qd5#
- 1...Ra1
- 2.Sc2#
- 1...Rb1
- 2.Sc2#
- 1...Rd1
- 2.Sc2#
- 1...Re1
- 2.Sc2#
- 1...Rf1
- 2.Sc2#
- 1...Rg1
- 2.Sc2#
- 1...Rh1
- 2.Sc2#
- 1...Rc2
- 2.Sxc2#
- 1...Bb5
- 2.Sxb5#
- 1...Bb7
- 2.Sb5#
- 1...Bc8
- 2.Sb5#
- 1...Sd3
- 2.Qd5#
- 1...Sf3
- 2.Qd5#
- 1...Sg4
- 2.Qd5#
- 1...Sc6
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...Sd7
- 2.Qd5#
- 1...Rc3!
- 1...Rxc4
- 1.Kh6?
- Keys
- 1.Qh2!
- 1...Rxc4
- 2.Sc2#
- 1...Bxc4
- 2.Sb5#
- 1...Sxc4
- 2.Qd6#
- 1...Ra1
- 2.Sc2#
- 1...Rb1
- 2.Sc2#
- 1...Rd1
- 2.Sc2#
- 1...Re1
- 2.Sc2#
- 1...Rf1
- 2.Sc2#
- 1...Rg1
- 2.Sc2#
- 1...Rh1
- 2.Sc2#
- 1...Rc2
- 2.Sxc2#
- 1...Rc3
- 2.bxc3#
- 1...Bb5
- 2.Sxb5#
- 1...Bb7
- 2.Sb5#
- 1...Bc8
- 2.Sb5#
- 1...Sd3
- 2.Qd6#
- 1...Sf3
- 2.Qd6#
- 1...Sg4
- 2.Qd6#
- 1...Sc6
- 2.Qd6#
- 1...Sg6
- 2.Qd6#
- 1...Sd7
- 2.Qd6#
- 1...Rxc4
- 1.Qh2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::S(D)
- R(a);N_GUARD,P_PINQ(H)::S(D)
- R(a);N_GUARD::S(D),XR(a)
- R(a);OGATE::P(A),XR(a)
- R(a);N_GUARD,P_SPINR(a),XP(F)::S(D)
- B(f);N_GUARD,P_SPINB(f),XP(F)::S(D)
- B(f);N_GUARD::S(D),XB(f)
- B(f);N_GUARD::S(D)
- S(e);OGATE::QAR1(H)
- S(e);OGATE,P_SPINS(e),XP(F)::QAR1(H)
- Tries
- Try
- K(J);P-FLIGHT
- Vars
- R(a);N_GUARD,P_SPINR(a),XP(F)::S(D)
- B(f);N_GUARD,P_SPINB(f),XP(F)::S(D)
- S(e);OGATE,P_SPINS(e),XP(F)::QAR1(H)
- R(a);N_GUARD::S(D)
- R(a);N_GUARD,P_PINQ(H)::S(D)
- R(a);N_GUARD::S(D),XR(a)
- R(a);OGATE::P(A),XR(a)
- B(f);N_GUARD::S(D),XB(f)
- B(f);N_GUARD::S(D)
- S(e);OGATE::QAR1(H)
- Refutation
- S(e);CHECK
- Try
- K(J);P-FLIGHT
- Vars
- R(a);N_GUARD,P_SPINR(a),XP(F)::S(D)
- B(f);N_GUARD,P_SPINB(f),XP(F)::S(D)
- S(e);OGATE,P_SPINS(e),XP(F)::QAR1(H)
- R(a);N_GUARD::S(D)
- R(a);N_GUARD::S(D),XR(a)
- R(a);OGATE::P(A),XR(a)
- B(f);N_GUARD::S(D),XB(f)
- B(f);N_GUARD::S(D)
- S(e);OGATE::QAR1(H)
- Refutation
- R(a);CHECK
- Try
- K(J);S_FLIGHT
- Vars
- R(a);N_GUARD,P_SPINR(a),XP(F)::S(D)
- B(f);N_GUARD,P_SPINB(f),XP(F)::S(D)
- S(e);OGATE,P_SPINS(e),XP(F)::QAR1(H)
- R(a);N_GUARD::S(D)
- R(a);N_GUARD::S(D),XR(a)
- R(a);OGATE::P(A),XR(a)
- B(f);N_GUARD::S(D),XB(f)
- B(f);N_GUARD::S(D)
- S(e);OGATE::QAR1(H)
- Refutation
- R(a);CHECK
- Try
- K(J);P-FLIGHT
- Vars
- R(a);N_GUARD,P_SPINR(a),XP(F)::S(D)
- B(f);N_GUARD,P_SPINB(f),XP(F)::S(D)
- S(e);OGATE,P_SPINS(e),XP(F)::QAR1(H)
- R(a);N_GUARD::S(D)
- R(a);N_GUARD,P_PINQ(H)::S(D)
- R(a);N_GUARD::S(D),XR(a)
- R(a);OGATE::P(A),XR(a)
- B(f);N_GUARD::S(D),XB(f)
- B(f);N_GUARD::S(D)
- S(e);OGATE::QAR1(H)
- Refutation
- S(e);CHECK
- Try
- Q(H);
- Vars
- R(a);N_GUARD,P_SPINR(a),XP(F)::S(D)
- B(f);N_GUARD,P_SPINB(f),XP(F)::S(D)
- S(e);OGATE,P_SPINS(e),XP(F)::QAR1(H)
- R(a);N_GUARD::S(D)
- R(a);N_GUARD::S(D),XR(a)
- R(a);OGATE::P(A),XR(a)
- B(f);N_GUARD::S(D),XB(f)
- B(f);N_GUARD::S(D)
- S(e);OGATE::QAR1(H)
- Refutation
- R(a);CHECK
- Try
- Q(H);
- Threat
- QAB1(H)
- Vars
- S(e);OGATE,P_SPINS(e),XP(F)::QAR1(H)
- R(a);N_GUARD::S(D)
- S(e);OGATE::QAR1(H)
- Refutation
- R(a);CHECK
- Try
- P(A);
- Vars
- R(a);N_GUARD,P_SPINR(a),XP(F)::S(D)
- B(f);N_GUARD,P_SPINB(f),XP(F)::S(D)
- S(e);OGATE,P_SPINS(e),XP(F)::QAR1(H)
- R(a);N_GUARD::S(D)
- R(a);N_GUARD,P_PINQ(H)::S(D)
- R(a);N_GUARD::S(D),XR(a)
- B(f);N_GUARD::S(D),XB(f)
- B(f);N_GUARD::S(D)
- S(e);OGATE::QAR1(H)
- Refutation
- R(a);
- Try
- Actual
- Q(H);
- Vars
- R(a);N_GUARD,P_SPINR(a),XP(F)::S(D)
- B(f);N_GUARD,P_SPINB(f),XP(F)::S(D)
- S(e);OGATE,P_SPINS(e),XP(F)::QAR2(H)
- R(a);N_GUARD::S(D)
- R(a);N_GUARD,P_PINQ(H)::S(D)
- R(a);N_GUARD::S(D),XR(a)
- R(a);OGATE::P(A),XR(a)
- B(f);N_GUARD::S(D),XB(f)
- B(f);N_GUARD::S(D)
- S(e);OGATE::QAR2(H)
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).