MESON Chess Problem Database
Problem Display
PID: 185937 (2NR4/4Q3/8/1P1p4/3k2n1/N7/3P4/1K1R4 w - - 0 1)
Howard, KN
Chess, 1958
#2
8 + 3
SOLUTION
- SOUND
- Sets
- 1...Kd3
- 2.Rxd5#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...Kd3
- Tries
- 1.Ka1?
- 1...Kd3
- 2.Rxd5#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...Se5!
- 1...Kd3
- 1.Kc1?
- 1...Kd3
- 2.Rxd5#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...Se5!
- 1...Kd3
- 1.Ka2?
- 1...Kd3
- 2.Rxd5#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...Se5!
- 1...Kd3
- 1.Kb2?
- 1...Kd3
- 2.Rxd5#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 2.dxe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...Se5!
- 1...Kd3
- 1.Kc2?
- 1...Se3+
- 2.Qxe3#
- 2.dxe3#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...Se5!
- 1...Se3+
- 1.Sb6?
- threat
- 2.Rxd5#
- 1...Kd3
- 2.Rxd5#
- 1...Se3
- 2.Qxe3#
- 1...Sf6
- 2.Qe3#
- 1...Se5!
- threat
- 1.Sa7?
- 1...Kd3
- 2.Rxd5#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...Se5!
- 1...Kd3
- 1.Rc1?
- 1...Kd3
- 2.Rxd5#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...Se5!
- 1...Kd3
- 1.Re1?
- 1...Kd3
- 2.Rxd5#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...Se5!
- 1...Kd3
- 1.Rf1?
- 1...Kd3
- 2.Rxd5#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...Se5!
- 1...Kd3
- 1.Rg1?
- 1...Kd3
- 2.Rxd5#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...Se5!
- 1...Kd3
- 1.Rh1?
- 1...Kd3
- 2.Rxd5#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...Se5!
- 1...Kd3
- 1.Rd7?
- 1...Kd3
- 2.Rxd5#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...Se5!
- 1...Kd3
- 1.Qb4+?
- 1...Kd3
- 2.Qc4#
- 1...Ke5!
- 1...Kd3
- 1.Qe2?
- 1...Se3
- 2.Qxe3#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se5
- 2.Qe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...Kc5!
- 1...Se3
- 1.Qe4+?
- 1...Kc5
- 2.Rc1#
- 2.Rxd5#
- 1...Kxe4!
- 1...Kc5
- 1.Qe6?
- threat
- 2.Rxd5#
- 2.Qxd5#
- 1...Kd3
- 2.Rxd5#
- 1...Se5
- 2.Qxd5#
- 1...Se3
- 2.Qxe3#
- 1...Sf6
- 2.Qe3#
- 1...Kc5!
- threat
- 1.b6?
- 1...Kd3
- 2.Rxd5#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...Se5!
- 1...Kd3
- 1.Ka1?
- Keys
- 1.Qe1!
- 1...Kd3
- 2.Rxd5#
- 1...Kc5
- 2.d4#
- 1...Se3
- 2.Qxe3#
- 1...Sf2
- 2.Qe3#
- 1...Sh2
- 2.Qe3#
- 1...Se5
- 2.Qe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...Kd3
- 1.Qe1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- K(a);P-FLIGHT::R(H),XP(c)
- S(b);N_GUARD::QAB1(F)
- S(b);N_GUARD::QAB1(F),XS(b)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- K(a);P-FLIGHT::R(H),XP(c)
- S(b);N_GUARD::QAB1(F)
- S(b);N_GUARD::QAB1(F),XS(b)
- Refutation
- S(b);
- Try
- K(A);P-FLIGHT
- Vars
- K(a);P-FLIGHT::R(H),XP(c)
- S(b);N_GUARD::QAB1(F)
- S(b);N_GUARD::QAB1(F),XS(b)
- Refutation
- S(b);
- Try
- K(A);S_FLIGHT
- Vars
- K(a);P-FLIGHT::R(H),XP(c)
- S(b);N_GUARD::QAB1(F)
- S(b);N_GUARD::QAB1(F),XS(b)
- Refutation
- S(b);
- Try
- K(A);P-FLIGHT
- Vars
- K(a);P-FLIGHT::R(H),XP(c)
- S(b);N_GUARD::QAB1(F)
- Refutation
- S(b);
- Try
- K(A);S_FLIGHT
- Vars
- S(b);N_GUARD::QAB1(F)
- Refutation
- S(b);
- Try
- S(G);
- Threat
- R1(H),XP(c)
- Vars
- K(a);P-FLIGHT::R(H),XP(c)
- S(b);N_GUARD::QAB1(F),XS(b)
- S(b);N_GUARD::QAB1(F)
- Refutation
- S(b);
- Try
- S(G);
- Vars
- K(a);P-FLIGHT::R(H),XP(c)
- S(b);N_GUARD::QAB1(F)
- S(b);N_GUARD::QAB1(F),XS(b)
- Refutation
- S(b);
- Try
- R(B);
- Vars
- K(a);P-FLIGHT::R(H),XP(c)
- S(b);N_GUARD::QAB1(F)
- S(b);N_GUARD::QAB1(F),XS(b)
- Refutation
- S(b);
- Try
- R(B);
- Vars
- K(a);P-FLIGHT::R(H),XP(c)
- S(b);N_GUARD::QAB1(F)
- S(b);N_GUARD::QAB1(F),XS(b)
- Refutation
- S(b);
- Try
- R(B);
- Vars
- K(a);P-FLIGHT::R(H),XP(c)
- S(b);N_GUARD::QAB1(F)
- S(b);N_GUARD::QAB1(F),XS(b)
- Refutation
- S(b);
- Try
- R(B);
- Vars
- K(a);P-FLIGHT::R(H),XP(c)
- S(b);N_GUARD::QAB1(F)
- S(b);N_GUARD::QAB1(F),XS(b)
- Refutation
- S(b);
- Try
- R(B);
- Vars
- K(a);P-FLIGHT::R(H),XP(c)
- S(b);N_GUARD::QAB1(F)
- S(b);N_GUARD::QAB1(F),XS(b)
- Refutation
- S(b);
- Try
- R(H);
- Vars
- K(a);P-FLIGHT::R(H),XP(c)
- S(b);N_GUARD::QAB1(F)
- S(b);N_GUARD::QAB1(F),XS(b)
- Refutation
- S(b);
- Try
- Q(F);CHECK
- Vars
- K(a);P-FLIGHT::QAB1(F)
- Refutation
- K(a);N_SPINP(c),S_FLIGHT
- Try
- Q(F);
- Vars
- S(b);N_GUARD::QAB1(F),XS(b)
- S(b);N_GUARD::QAB1(F)
- Refutation
- K(a);N_SPINP(c),S_FLIGHT
- Try
- Q(F);CHECK
- Refutation
- K(a);N_SPINP(c),P-FLIGHT,XQ(F)
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- K(a);P-FLIGHT::R(H),XP(c)
- S(b);::QAR1(F),XP(c)
- S(b);N_GUARD::QAB1(F),XS(b)
- S(b);N_GUARD::QAB1(F)
- Refutation
- K(a);N_SPINP(c),S_FLIGHT
- Try
- P(E);
- Vars
- K(a);P-FLIGHT::R(H),XP(c)
- S(b);N_GUARD::QAB1(F)
- S(b);N_GUARD::QAB1(F),XS(b)
- Refutation
- S(b);
- Try
- Actual
- Q(F);
- Vars
- K(a);P-FLIGHT::R(H),XP(c)
- K(a);N_SPINP(c),OGATE,S_FLIGHT::P(C)
- S(b);N_GUARD::QAB1(F),XS(b)
- S(b);N_GUARD::QAB1(F)
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