MESON Chess Problem Database

Problem Display
PID: 51765 (3R4/7q/2p3B1/p5p1/K7/2Nn1nQ1/1B1kP1N1/5R2 w - - 0 1)

Morse, Christopher Jeremy

StrateGems, 2004

3R4/7q/2p3B1/p5p1/K7/2Nn1nQ1/1B1kP1N1/5R2

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sg1
      • 2.Qxd3#
    • 1...Sh2
      • 2.Qxd3#
    • 1...Sd4
      • 2.Qxd3#
    • 1...Sh4
      • 2.Qxd3#
  • Tries
    • 1.Sb1+?
      • 1...Kxe2
        • 2.Qxf3#
      • 1...Kc2!
    • 1.Se4+?
      • 1...Kxe2
        • 2.Qxf3#
      • 1...Kc2!
    • 1.Qe1+?
      • 1...Kc2
        • 2.Qc1#
      • 1...Sxe1!
    • 1.Qf4+?
      • 1...Kc2
        • 2.Qc1#
      • 1...gxf4!
    • 1.Qxg5+?
      • 1...Kc2
        • 2.Qc1#
      • 1...Sxg5!
  • Keys
    • 1.Rf2!
      • threat
        • 2.exd3#
        • 2.exf3#
        • 2.e3#
        • 2.e4#
      • 1...Qh4+
        • 2.e4#
      • 1...Kc2
        • 2.exf3#
      • 1...Qa7
        • 2.e3#
      • 1...Qd7
        • 2.exd3#
      • 1...Qe7
        • 2.e3#
        • 2.e4#
      • 1...Se1
        • 2.exd3#
        • 2.e3#
        • 2.e4#
      • 1...Sg1
        • 2.Qxd3#
      • 1...Sh2
        • 2.Qxd3#
        • 2.exd3#
        • 2.e3#
        • 2.e4#
      • 1...Sd4
        • 2.Qxd3#
      • 1...Sh4
        • 2.Qxd3#
        • 2.exd3#
        • 2.e3#
        • 2.e4#
      • 1...Se5
        • 2.exd3#
        • 2.e3#
        • 2.e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(c);OGATE::QAR1(F),XS(b)
    • S(c);N_SPINS(b),OGATE::QAR1(F),XS(b)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(a);N_SPINS(b),P-FLIGHT,XP(C)::QAB1(F),XS(c)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • K(a);N_SPINS(b),P-FLIGHT,XP(C)::QAB1(F),XS(c)
      • Refutation
        • K(a);N_SPINS(b),P-FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • S(c);XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(F)
      • Refutation
        • P(e);XQ(F)
    • Try
      • Q(F);CHECK,XP(e)
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(F)
      • Refutation
        • S(c);XQ(F)
  • Actual
    • R(A);
    • Threat
      • DUALS(4)
    • Vars
      • Q(g);CHECK::R(A)+P(C)
      • K(a);P-FLIGHT::R(A)+P(C),XS(c)
      • Q(g);::R(A)+P(C)
      • Q(g);N_SPINS(b)::R(A)+P(C),XS(b)
      • S(c);OGATE::QAR1(F),XS(b)
      • S(c);N_SPINS(b),OGATE::QAR1(F),XS(b)
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