MESON Chess Problem Database
Problem Display
PID: 159904 (Q1R1n3/4N3/5P2/3r3k/1p4N1/pq1PB1K1/1np2P2/8 w - - 0 1)
Anonymous
BCPJ (August), 1919
#2
9 + 8
SOLUTION
- SOUND
- Sets
- 1...Qa4
- 2.Qxd5#
- 1...Rxd3
- 2.Qh1#
- 1...Rd4
- 2.Qh1#
- 1...Ra5
- 2.Qh1#
- 1...Rb5
- 2.Qh1#
- 1...Rc5
- 2.Qh1#
- 1...Re5
- 2.Qh1#
- 1...Rf5
- 2.Qh1#
- 1...Rg5
- 2.Qh1#
- 1...Rd6
- 2.Qh1#
- 1...Rd7
- 2.Qh1#
- 1...Rd8
- 2.Qh1#
- 1...Sd6
- 2.Rh8#
- 1...Sxf6
- 2.Sxf6#
- 1...Sc7
- 2.Rh8#
- 1...Sg7
- 2.Rh8#
- 1...Qa4
- Tries
- 1.Rxc2?
- threat
- 2.Qxe8#
- 1...Rxd3
- 2.Qh1#
- 1...Sxf6
- 2.Sxf6#
- 1...Qa4
- 2.Qxd5#
- 1...Rd4
- 2.Qh1#
- 1...Ra5
- 2.Qh1#
- 1...Rb5
- 2.Qh1#
- 1...Rc5
- 2.Qh1#
- 1...Re5
- 2.Qh1#
- 1...Rf5
- 2.Qh1#
- 1...Rg5
- 2.Qh1#
- 1...Rd6
- 2.Qh1#
- 1...Rd7
- 2.Qh1#
- 1...Rd8
- 2.Qh1#
- 1...Sd6
- 2.Qh8#
- 1...Sc7
- 2.Qh8#
- 1...Sg7
- 2.Qh8#
- 1...Qxd3!
- threat
- 1.Rc4?
- threat
- 2.Qxd5#
- 2.Qxe8#
- 1...Qxc4
- 2.Qxe8#
- 1...Rxd3
- 2.Qh1#
- 2.Qxe8#
- 1...Sxd3
- 2.Qxe8#
- 1...Sxc4
- 2.Qxe8#
- 1...Sxf6
- 2.Sxf6#
- 1...Qa4
- 2.Qxd5#
- 1...Qc3
- 2.Qxe8#
- 1...Rd4
- 2.Qh1#
- 2.Qxe8#
- 1...Ra5
- 2.Qh1#
- 2.Qxa5#
- 2.Qxe8#
- 1...Rb5
- 2.Qh1#
- 2.Qxe8#
- 1...Rc5
- 2.Qh1#
- 2.Qxe8#
- 1...Re5
- 2.Qh1#
- 2.Qxe8#
- 1...Rf5
- 2.Qh1#
- 2.Qxe8#
- 1...Rg5
- 2.Qh1#
- 1...Rd6
- 2.Qh1#
- 2.Qxe8#
- 1...Rd7
- 2.Qh1#
- 2.Qxe8#
- 1...Rd8
- 2.Qh1#
- 1...Sd6
- 2.Qh8#
- 1...Sc7
- 2.Qh8#
- 1...Sg7
- 2.Qh8#
- 1...Qxd3!
- threat
- 1.Rc5?
- threat
- 2.Qxe8#
- 1...Rxc5
- 2.Qh1#
- 1...Sxf6
- 2.Sxf6#
- 1...Qa4
- 2.Rxd5#
- 2.Qxd5#
- 1...Re5
- 2.Rxe5#
- 2.Qh1#
- 1...Rf5
- 2.Rxf5#
- 2.Qh1#
- 1...Rg5
- 2.Rxg5#
- 2.Qh1#
- 1...Sd6
- 2.Qh8#
- 1...Sc7
- 2.Qh8#
- 1...Sg7
- 2.Qh8#
- 1...Qxd3!
- threat
- 1.Rc7?
- threat
- 2.Qxe8#
- 1...Rxd3
- 2.Qh1#
- 1...Sxf6
- 2.Sxf6#
- 1...Sxc7
- 2.Qh8#
- 1...Qa4
- 2.Qxd5#
- 1...Rd4
- 2.Qh1#
- 1...Ra5
- 2.Qh1#
- 1...Rb5
- 2.Qh1#
- 1...Rc5
- 2.Qh1#
- 1...Re5
- 2.Qh1#
- 1...Rf5
- 2.Qh1#
- 1...Rg5
- 2.Qh1#
- 1...Rd6
- 2.Qh1#
- 1...Rd7
- 2.Qh1#
- 1...Rd8
- 2.Qh1#
- 1...Sd6
- 2.Qh8#
- 1...Sg7
- 2.Qh8#
- 1...Qxd3!
- threat
- 1.Rxe8?
- threat
- 2.Rh8#
- 1...Rd8
- 2.Qh1#
- 1...Qxd3!
- threat
- 1.Qc6?
- threat
- 2.Qxe8#
- 1...Rxd3
- 2.Qh1#
- 1...Sxf6
- 2.Sxf6#
- 1...Qa4
- 2.Qxd5#
- 1...Rd4
- 2.Qh1#
- 1...Ra5
- 2.Qh1#
- 1...Rb5
- 2.Qh1#
- 1...Rc5
- 2.Qh1#
- 1...Re5
- 2.Qh1#
- 1...Rf5
- 2.Qh1#
- 1...Rg5
- 2.Qh1#
- 1...Rd6
- 2.Qh1#
- 1...Rd7
- 2.Qh1#
- 1...Rd8
- 2.Qh1#
- 1...Sd6
- 2.Rh8#
- 1...Sc7
- 2.Rh8#
- 1...Sg7
- 2.Rh8#
- 1...Qxd3!
- threat
- 1.f7?
- threat
- 2.fxe8Q#
- 2.fxe8B#
- 1...Rxd3
- 2.Qh1#
- 1...Sxd3
- 2.fxe8Q#
- 2.fxe8B#
- 1...c1Q
- 2.fxe8Q#
- 2.fxe8B#
- 1...c1S
- 2.fxe8Q#
- 2.fxe8B#
- 1...c1B
- 2.fxe8Q#
- 2.fxe8B#
- 1...c1R
- 2.fxe8Q#
- 2.fxe8B#
- 1...Qa2
- 2.fxe8Q#
- 2.fxe8B#
- 1...Qa4
- 2.Qxd5#
- 1...Qc4
- 2.fxe8Q#
- 2.fxe8B#
- 1...Qc3
- 2.fxe8Q#
- 2.fxe8B#
- 1...Rd4
- 2.Qh1#
- 1...Ra5
- 2.Qh1#
- 1...Rb5
- 2.Qh1#
- 1...Rc5
- 2.Qh1#
- 1...Re5
- 2.Qh1#
- 1...Rf5
- 2.Qh1#
- 1...Rg5
- 2.Qh1#
- 1...Rd6
- 2.Qh1#
- 1...Rd7
- 2.Qh1#
- 1...Rd8
- 2.Qh1#
- 1...Sd1
- 2.fxe8Q#
- 2.fxe8B#
- 1...Sa4
- 2.fxe8Q#
- 2.fxe8B#
- 1...Sc4
- 2.fxe8Q#
- 2.fxe8B#
- 1...Sd6
- 2.Sf6#
- 2.Rh8#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sf6#
- 2.Rh8#
- 1...Sg7
- 2.Sf6#
- 2.Rh8#
- 1...a2
- 2.fxe8Q#
- 2.fxe8B#
- 1...Qxd3!
- threat
- 1.Rxc2?
- Keys
- 1.Rc3!
- threat
- 2.Qxe8#
- 1...Rxd3
- 2.Qh1#
- 1...Sxf6
- 2.Sxf6#
- 1...Qa4
- 2.Qxd5#
- 1...Rd4
- 2.Qh1#
- 1...Ra5
- 2.Qh1#
- 1...Rb5
- 2.Qh1#
- 1...Rc5
- 2.Qh1#
- 1...Re5
- 2.Qh1#
- 1...Rf5
- 2.Qh1#
- 1...Rg5
- 2.Qh1#
- 1...Rd6
- 2.Qh1#
- 1...Rd7
- 2.Qh1#
- 1...Rd8
- 2.Qh1#
- 1...Sd6
- 2.Qh8#
- 1...Sc7
- 2.Qh8#
- 1...Sg7
- 2.Qh8#
- threat
- 1.Rc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(d);N_GUARD::QAR(H),XR(f)
- R(f);OGATE,P_PINB(C),XP(B)::QAR(H)
- R(f);OGATE::QAR(H)
- R(f);OGATE,SBLOCK::QAR(H)
- R(f);OGATE,P_PINS(E)::QAR(H)
- S(h);OGATE::R(I)
- S(h);XP(F)::S(E),XS(h)
- Tries
- Try
- R(I);XP(b)
- Threat
- QAB(H),XS(h)
- Vars
- R(f);OGATE,P_PINB(C),XP(B)::QAR(H)
- S(h);XP(F)::S(E),XS(h)
- Q(d);N_GUARD::QAR(H),XR(f)
- R(f);OGATE::QAR(H)
- R(f);OGATE,SBLOCK::QAR(H)
- R(f);OGATE,P_PINS(E)::QAR(H)
- S(h);OGATE::QAR(H)
- Refutation
- Q(d);P_PINB(C),XP(B)
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- Q(d);XR(I)::QAB(H),XS(h)
- S(a);XP(B)::QAB(H),XS(h)
- S(a);XR(I)::QAB(H),XS(h)
- S(h);XP(F)::S(E),XS(h)
- Q(d);::QAR(H),XR(f)
- Q(d);::QAB(H),XS(h)
- R(f);OGATE,P_PINS(E)::QAR(H)
- R(f);OGATE::QAR(H)
- S(h);OGATE::QAR(H)
- Refutation
- Q(d);P_PINB(C),XP(B)
- Try
- R(I);P_PINR(f)
- Threat
- QAB(H),XS(h)
- Vars
- R(f);N_SPINR(f),OGATE,XR(I)::QAR(H)
- S(h);XP(F)::S(E),XS(h)
- S(h);OGATE::QAR(H)
- Refutation
- Q(d);P_PINB(C),XP(B)
- Try
- R(I);
- Threat
- QAB(H),XS(h)
- Vars
- R(f);OGATE,P_PINB(C),XP(B)::QAR(H)
- S(h);XP(F)::S(E),XS(h)
- S(h);OGATE,XR(I)::QAR(H)
- Q(d);N_GUARD::QAR(H),XR(f)
- R(f);OGATE::QAR(H)
- R(f);OGATE,SBLOCK::QAR(H)
- R(f);OGATE,P_PINS(E)::QAR(H)
- S(h);OGATE::QAR(H)
- Refutation
- Q(d);P_PINB(C),XP(B)
- Try
- R(I);XS(h)
- Threat
- R(I)
- Vars
- R(f);OGATE::QAR(H)
- Refutation
- Q(d);P_PINB(C),XP(B)
- Try
- Q(H);
- Threat
- QAB(H),XS(h)
- Vars
- R(f);OGATE,P_PINB(C),XP(B)::QAR(H)
- S(h);XP(F)::S(E),XS(h)
- Q(d);N_GUARD::QAR(H),XR(f)
- R(f);OGATE::QAR(H)
- R(f);OGATE,SBLOCK::QAR(H)
- R(f);OGATE,P_PINS(E)::QAR(H)
- S(h);OGATE::R(I)
- Refutation
- Q(d);P_PINB(C),XP(B)
- Try
- P(F);
- Threat
- PXS(h)=Q
- Vars
- R(f);OGATE,P_PINB(C),XP(B)::QAR(H)
- S(a);XP(B)::PXS(h)=Q
- P(b);::PXS(h)=Q
- Q(d);::PXS(h)=Q
- Q(d);N_GUARD::QAR(H),XR(f)
- R(f);OGATE::QAR(H)
- R(f);OGATE,SBLOCK::QAR(H)
- R(f);OGATE,P_PINS(E)::QAR(H)
- S(a);::PXS(h)=Q
- S(h);N_GUARD::S(E),XS(h)
- P(c);::PXS(h)=Q
- Refutation
- Q(d);P_PINB(C),XP(B)
- Try
- Actual
- R(I);
- Threat
- QAB(H),XS(h)
- Vars
- R(f);OGATE,P_PINB(C),XP(B)::QAR(H)
- S(h);XP(F)::S(E),XS(h)
- Q(d);N_GUARD::QAR(H),XR(f)
- R(f);OGATE::QAR(H)
- R(f);OGATE,SBLOCK::QAR(H)
- R(f);OGATE,P_PINS(E)::QAR(H)
- S(h);OGATE::QAR(H)
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