MESON Chess Problem Database
Problem Display
PID: 140652 (8/2pR4/2n5/8/3nk2N/6Q1/p7/B2K4 w - - 0 1)
McDowell, Michael
Mat Plus Forum, 2011
#2
5 + 5
SOLUTION
- SOUND
- Sets
- 1...Sc2
- 2.Qf3#
- 1...Se2
- 2.Qf3#
- 1...Sb3
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sb5
- 2.Qf3#
- 1...Sf5
- 2.Qf3#
- 1...Se6
- 2.Qf3#
- 1...Sb4
- 2.Rxd4#
- 1...Sa5
- 2.Rxd4#
- 1...Se5
- 2.Rxd4#
- 1...Sa7
- 2.Rxd4#
- 1...Se7
- 2.Rxd4#
- 1...Sb8
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sc2
- Tries
- 1.Ke1?
- 1...Sf3+
- 2.Qxf3#
- 1...Se2
- 2.Qf3#
- 1...Sb3
- 2.Qf3#
- 1...Sb5
- 2.Qf3#
- 1...Sf5
- 2.Qf3#
- 1...Se6
- 2.Qf3#
- 1...Sb4
- 2.Rxd4#
- 1...Sa5
- 2.Rxd4#
- 1...Se5
- 2.Rxd4#
- 1...Sa7
- 2.Rxd4#
- 1...Se7
- 2.Rxd4#
- 1...Sb8
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...Sc2+!
- 1...Sf3+
- 1.Kd2?
- threat
- 2.Qe3#
- 1...Sf3+
- 2.Qxf3#
- 1...Sc2
- 2.Qf3#
- 2.Qg4#
- 1...Sf5
- 2.Qf3#
- 2.Qg4#
- 1...Sb3+!
- threat
- 1.Rd5?
- 1...Sf3
- 2.Qxf3#
- 1...Sb4
- 2.Rxd4#
- 2.Re5#
- 1...Sc2
- 2.Qf3#
- 1...Se2
- 2.Qf3#
- 1...Sb3
- 2.Qf3#
- 1...Sb5
- 2.Qf3#
- 1...Sf5
- 2.Qf3#
- 1...Se6
- 2.Qf3#
- 1...Sa5
- 2.Rxd4#
- 2.Re5#
- 1...Se5
- 2.Rxd4#
- 2.Rxe5#
- 1...Sa7
- 2.Rxd4#
- 2.Re5#
- 1...Se7
- 2.Rxd4#
- 2.Re5#
- 1...Sb8
- 2.Rxd4#
- 2.Re5#
- 1...Sd8
- 2.Rxd4#
- 2.Re5#
- 1...Kxd5!
- 1...Sf3
- 1.Rd6?
- 1...Sf3
- 2.Qxf3#
- 1...Sb4
- 2.Rxd4#
- 1...Sc2
- 2.Qf3#
- 1...Se2
- 2.Qf3#
- 1...Sb3
- 2.Qf3#
- 1...Sb5
- 2.Qf3#
- 1...Sf5
- 2.Qf3#
- 1...Se6
- 2.Qf3#
- 1...Sa5
- 2.Rxd4#
- 1...Se5
- 2.Rxd4#
- 1...Sa7
- 2.Rxd4#
- 1...Se7
- 2.Rxd4#
- 1...Sb8
- 2.Rxd4#
- 1...Sd8
- 2.Rxd4#
- 1...cxd6!
- 1...Sf3
- 1.Rd8?
- 1...Sf3
- 2.Qxf3#
- 1...Sb4
- 2.Rxd4#
- 1...Sc2
- 2.Qf3#
- 1...Se2
- 2.Qf3#
- 1...Sb3
- 2.Qf3#
- 1...Sb5
- 2.Qf3#
- 1...Sf5
- 2.Qf3#
- 1...Se6
- 2.Qf3#
- 1...Sa5
- 2.Rxd4#
- 1...Se5
- 2.Rxd4#
- 1...Sa7
- 2.Rxd4#
- 1...Se7
- 2.Rxd4#
- 1...Sb8
- 2.Rxd4#
- 1...Sxd8!
- 1...Sf3
- 1.Qf3+?
- 1...Ke5
- 2.Qf5#
- 1...Sxf3!
- 1...Ke5
- 1.Qg4+?
- 1...Kd3
- 2.Qe2#
- 1...Ke5
- 2.Qf5#
- 1...Ke3!
- 1...Kd3
- 1.Ke1?
- Keys
- 1.Qf2!
- 1...Kd3
- 2.Qe2#
- 1...Ke5
- 2.Qf5#
- 1...Sb4
- 2.Qxd4#
- 1...Sc2
- 2.Qf3#
- 1...Se2
- 2.Qf3#
- 1...Sb3
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sb5
- 2.Qf3#
- 1...Sf5
- 2.Qf3#
- 1...Se6
- 2.Qf3#
- 1...Sa5
- 2.Qxd4#
- 1...Se5
- 2.Rxd4#
- 2.Qxd4#
- 1...Sa7
- 2.Qxd4#
- 1...Se7
- 2.Qxd4#
- 1...Sb8
- 2.Qxd4#
- 1...Sd8
- 2.Qxd4#
- 1...Kd3
- 1.Qf2!
This is a version of 10850
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 6
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- S(b);N_GUARD::QAB1(C)
- S(b);N_GUARD::QAB1(C),XS(b)
- S(d);N_GUARD::R1(E),XS(b)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- S(b);CHECK,N_GUARD::QAB1(C),XS(b)
- S(b);N_GUARD::QAB1(C)
- S(d);N_GUARD::R1(E),XS(b)
- Refutation
- S(b);CHECK
- Try
- K(B);P-FLIGHT
- Threat
- QAR1(C)
- Vars
- S(b);CHECK,N_GUARD::QAB1(C),XS(b)
- Refutation
- S(b);CHECK
- Try
- R(E);
- Vars
- S(b);N_GUARD::QAB1(C),XS(b)
- S(b);N_GUARD::QAB1(C)
- Refutation
- K(c);S_FLIGHT,XR(E)
- Try
- R(E);
- Vars
- S(b);N_GUARD::QAB1(C),XS(b)
- S(d);N_GUARD::R1(E),XS(b)
- S(b);N_GUARD::QAB1(C)
- Refutation
- P(e);XR(E)
- Try
- R(E);
- Vars
- S(b);N_GUARD::QAB1(C),XS(b)
- S(d);N_GUARD::R1(E),XS(b)
- S(b);N_GUARD::QAB1(C)
- Refutation
- S(d);XR(E)
- Try
- Q(C);CHECK
- Vars
- K(c);P-FLIGHT,P_SPINS(b)::QAR1(C)
- Refutation
- S(b);XQ(C)
- Try
- Q(C);CHECK
- Vars
- K(c);P_SPINS(b),S_FLIGHT::QAB1(C)
- K(c);P-FLIGHT,P_SPINS(b)::QAR1(C)
- Refutation
- K(c);P-FLIGHT
- Try
- Actual
- Q(C);
- Vars
- K(c);P_SPINS(b),S_FLIGHT::QAB1(C)
- K(c);P-FLIGHT,P_SPINS(b)::QAR1(C)
- S(d);N_GUARD::QAR1(C),XS(b)
- S(b);N_GUARD::QAB1(C)
- S(b);N_GUARD::QAB1(C),XS(b)
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