MESON Chess Problem Database
Problem Display
PID: 177456 (2B1K3/1rpN4/ppkr1Rn1/3p4/PPp5/1NQp4/2nP4/8 w - - 0 1)
Mendes de Moraes Filho, Feliciano
Busmen's Chess Review, 1963
#2
9 + 11
SOLUTION
- SOUND
- Sets
- 1...Re6+
- 2.Rxe6#
- 1...Rxf6
- 2.Qxf6#
- 1...Ra7
- 2.Sb8#
- 1...Rb8
- 2.Sxb8#
- 1...Sa1
- 2.Sd4#
- 1...Se1
- 2.Sd4#
- 1...Sa3
- 2.Sd4#
- 1...Se3
- 2.Sd4#
- 1...Sxb4
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sf4
- 2.Se5#
- 1...Sh4
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Se7
- 2.Se5#
- 1...Sf8
- 2.Se5#
- 1...Sh8
- 2.Se5#
- 1...d4
- 2.Qxc4#
- 1...a5
- 2.b5#
- 1...b5
- 2.Sa5#
- 1...Re6+
- Tries
- 1.Kf7?
- 1...Rxf6+
- 2.Qxf6#
- 1...Se5+
- 2.Sxe5#
- 1...Sxb4
- 2.Sd4#
- 1...Re6
- 2.Rxe6#
- 1...d4
- 2.Qxc4#
- 1...Ra7
- 2.Sb8#
- 1...Rb8
- 2.Sxb8#
- 1...Sa1
- 2.Sd4#
- 1...Se1
- 2.Sd4#
- 1...Sa3
- 2.Sd4#
- 1...Se3
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sf4
- 2.Se5#
- 1...Sh4
- 2.Se5#
- 1...Se7
- 2.Se5#
- 1...Sf8
- 2.Se5#
- 1...a5
- 2.b5#
- 1...b5
- 2.Sa5#
- 1...Sh8+!
- 1...Rxf6+
- 1.Sbc5?
- threat
- 2.Bxb7#
- 1...Re6+
- 2.Rxe6#
- 1...Rxf6
- 2.Qxf6#
- 1...Ra7
- 2.Sb8#
- 1...Rb8
- 2.Sxb8#
- 1...bxc5!
- threat
- 1.Rxd6+?
- 1...Kxd6
- 2.Qf6#
- 1...cxd6!
- 1...Kxd6
- 1.Re6?
- 1...Sxb4
- 2.Sd4#
- 1...d4
- 2.Qxc4#
- 1...Ra7
- 2.Sb8#
- 1...Rb8
- 2.Sxb8#
- 1...Sa1
- 2.Sd4#
- 1...Se1
- 2.Sd4#
- 1...Sa3
- 2.Sd4#
- 1...Se3
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sf4
- 2.Se5#
- 1...Sh4
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Se7
- 2.Se5#
- 1...Sf8
- 2.Se5#
- 1...Sh8
- 2.Se5#
- 1...a5
- 2.b5#
- 1...b5
- 2.Sa5#
- 1...Rxe6+!
- 1...Sxb4
- 1.Rxg6?
- threat
- 2.Se5#
- 1...Re6+
- 2.Rxe6#
- 1...Rf6
- 2.Rxf6#
- 2.Qxf6#
- 1...d4
- 2.Qxc4#
- 1...b5
- 2.Sa5#
- 1...Rxg6!
- threat
- 1.Qb2?
- 1...Re6+
- 2.Rxe6#
- 1...Rxf6
- 2.Qxf6#
- 1...Sxb4
- 2.Sd4#
- 1...cxb3
- 2.Qc3#
- 1...Ra7
- 2.Sb8#
- 1...Rb8
- 2.Sxb8#
- 1...Sa1
- 2.Sd4#
- 1...Se1
- 2.Sd4#
- 1...Sa3
- 2.Sd4#
- 1...Se3
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sf4
- 2.Se5#
- 1...Sh4
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Se7
- 2.Se5#
- 1...Sf8
- 2.Se5#
- 1...Sh8
- 2.Se5#
- 1...c3
- 2.Qxc3#
- 1...a5
- 2.b5#
- 1...b5
- 2.Sa5#
- 1...d4!
- 1...Re6+
- 1.Qxc2?
- threat
- 2.Sd4#
- 1...Re6+
- 2.Rxe6#
- 1...d4
- 2.Qxc4#
- 1...Rxf6!
- threat
- 1.Kf7?
- Keys
- 1.Qa1!
- 1...Re6+
- 2.Rxe6#
- 1...Rxf6
- 2.Qxf6#
- 1...Sxa1
- 2.Sd4#
- 1...Sxb4
- 2.Sd4#
- 1...cxb3
- 2.Qc3#
- 1...d4
- 2.Qh1#
- 1...Ra7
- 2.Sb8#
- 1...Rb8
- 2.Sxb8#
- 1...Se1
- 2.Sd4#
- 1...Sa3
- 2.Sd4#
- 1...Se3
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sf4
- 2.Se5#
- 1...Sh4
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Se7
- 2.Se5#
- 1...Sf8
- 2.Se5#
- 1...Sh8
- 2.Se5#
- 1...c3
- 2.Qxc3#
- 1...a5
- 2.b5#
- 1...b5
- 2.Sa5#
- 1...Re6+
- 1.Qa1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(h);CHECK,OGATEB::R(F),XR(h)
- R(h);N_SPINR(h),OGATE,XR(F)::QAR(C),XR(h)
- R(j);N_GUARD::S(G)
- R(j);N_GUARD,P_PINB(H)::S(G),XR(j)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD,XP(E)::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(i);N_GUARD::S(G)
- S(i);N_GUARD::S(G),XS(i)
- P(d);N_GUARD::QAR2(C),XP(c)
- P(e);N_GUARD::P(E)
- P(f);N_GUARD::S(B)
- Tries
- Try
- K(I);S_FLIGHT
- Vars
- R(h);CHECK,N_SPINR(h),OGATE,XR(F)::QAR(C),XR(h)
- S(i);CHECK,N_GUARD::S(G),XS(i)
- S(a);N_GUARD,XP(E)::S(B)
- R(h);OGATEB::R(F),XR(h)
- P(d);N_GUARD::QAR2(C),XP(c)
- R(j);N_GUARD::S(G)
- R(j);N_GUARD::S(G),XR(j)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(i);N_GUARD::S(G)
- P(e);N_GUARD::P(E)
- P(f);N_GUARD::S(B)
- Refutation
- S(i);CHECK
- Try
- S(B);N_PINP(c)
- Threat
- B(H),XR(j)
- Vars
- R(h);CHECK,OGATEB::R(F),XR(h)
- R(h);N_SPINR(h),OGATE,XR(F)::QAR(C),XR(h)
- R(j);N_GUARD::S(G)
- R(j);N_GUARD,P_PINB(H)::S(G),XR(j)
- Refutation
- P(f);XS(B)
- Try
- R(F);CHECK,XR(h)
- Vars
- K(g);N_SPINP(c),P-FLIGHT,XR(F)::QAR2(C)
- Refutation
- P(k);XR(F)
- Try
- R(F);
- Vars
- S(a);N_GUARD,XP(E)::S(B)
- P(d);N_GUARD::QAR2(C),XP(c)
- R(j);N_GUARD::S(G)
- R(j);N_GUARD,P_PINB(H)::S(G),XR(j)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(i);N_GUARD::S(G)
- S(i);N_GUARD::S(G),XS(i)
- P(e);N_GUARD::P(E)
- P(f);N_GUARD::S(B)
- Refutation
- R(h);CHECK,N_SPINR(h),XR(F)
- Try
- R(F);XS(i)
- Threat
- S(G)
- Vars
- R(h);CHECK,OGATEB::R(F),XR(h)
- P(d);N_GUARD::QAR2(C),XP(c)
- P(f);N_GUARD::S(B)
- Refutation
- R(h);N_SPINR(h),XR(F)
- Try
- Q(C);N_PINP(c)
- Vars
- R(h);CHECK,OGATEB::R(F),XR(h)
- R(h);N_SPINR(h),OGATE,XR(F)::QAR(C),XR(h)
- S(a);N_GUARD,XP(E)::S(B)
- P(c);OGATEB,XS(B)::QAR(C)
- R(j);N_GUARD::S(G)
- R(j);N_GUARD,P_PINB(H)::S(G),XR(j)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(i);N_GUARD::S(G)
- S(i);N_GUARD::S(G),XS(i)
- P(c);OGATEB::QAR(C),XP(c)
- P(e);N_GUARD::P(E)
- P(f);N_GUARD::S(B)
- Refutation
- P(d);
- Try
- Q(C);XS(a)
- Threat
- S(B)
- Vars
- R(h);CHECK,OGATEB::R(F),XR(h)
- P(d);N_GUARD::QAR2(C),XP(c)
- Refutation
- R(h);N_SPINR(h),XR(F)
- Try
- Actual
- Q(C);N_PINP(c)
- Vars
- R(h);CHECK,OGATEB::R(F),XR(h)
- R(h);N_SPINR(h),OGATE,XR(F)::QAR(C),XR(h)
- S(a);N_GUARD,XQ(C)::S(B)
- S(a);N_GUARD,XP(E)::S(B)
- P(c);OGATEB,XS(B)::QAR(C)
- P(d);OGATEB::QAB(C)
- R(j);N_GUARD::S(G)
- R(j);N_GUARD,P_PINB(H)::S(G),XR(j)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(i);N_GUARD::S(G)
- S(i);N_GUARD::S(G),XS(i)
- P(c);OGATEB::QAR(C),XP(c)
- P(e);N_GUARD::P(E)
- P(f);N_GUARD::S(B)
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