MESON Chess Problem Database

Problem Display
PID: 15890 (3R4/1pq2N2/1ppp4/1pk5/1N4nR/2K3Qn/4B1p1/8 w - - 0 1)

Saunders, Denis M

The Problemist, 1988

3R4/1pq2N2/1ppp4/1pk5/1N4nR/2K3Qn/4B1p1/8

#2

7 + 10

3936 The Wizard of Oz 1999

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf7
      • 2.Qxd6#
    • 1...Qc8
      • 2.Qxd6#
    • 1...Sf2
      • 2.Qe3#
    • 1...Sh2
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...Se5
      • 2.Qe3#
    • 1...Sf6
      • 2.Qe3#
    • 1...Sh6
      • 2.Qe3#
    • 1...d5
      • 2.Sd3#
  • Tries
    • 1.Kc2?
      • threat
        • 2.Qc3#
      • 1...Se3+
        • 2.Qxe3#
      • 1...Kd4
        • 2.Qe5#
      • 1...Qxf7
        • 2.Qxd6#
      • 1...Se5
        • 2.Qe3#
      • 1...Kxb4!
    • 1.Kd2?
      • threat
        • 2.Qc3#
      • 1...Kd4
        • 2.Qe5#
        • 2.Qe3#
      • 1...Qxf7
        • 2.Qxd6#
      • 1...Se3
        • 2.Qxe3#
      • 1...Se5
        • 2.Qe3#
      • 1...Kxb4!
    • 1.Kb3?
      • threat
        • 2.Qc3#
      • 1...Kd4
        • 2.Qe5#
      • 1...Se3
        • 2.Qxe3#
      • 1...Se5
        • 2.Qe3#
      • 1...Qxf7+!
    • 1.Rh5+?
      • 1...Se5
        • 2.Qe3#
      • 1...d5
        • 2.Sd3#
      • 1...Sg5!
    • 1.Qe5+?
      • 1...dxe5
        • 2.Sd3#
      • 1...d5
        • 2.Sd3#
        • 2.Qd4#
      • 1...Sxe5!
  • Keys
    • 1.Kb2!
      • threat
        • 2.Qc3#
      • 1...Kxb4
        • 2.Qa3#
      • 1...Kd4
        • 2.Qe5#
      • 1...Qxf7
        • 2.Qxd6#
      • 1...Se3
        • 2.Qxe3#
      • 1...Se5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • Q(j);N_GUARD,XS(F)::QAB1(C),XP(h)
    • Q(j);N_GUARD::QAB1(C),XP(h)
    • S(c);N_GUARD::QAB(C)
    • S(c);N_GUARD::QAB(C),XS(c)
    • P(h);::S(D)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAR2(C)
      • Vars
        • S(c);CHECK,N_GUARD::QAB(C),XS(c)
        • K(e);P_SPINP(h),P_SPINS(c),S_FLIGHT::QAB1(C)
        • Q(j);N_GUARD,XS(F)::QAB1(C),XP(h)
        • S(c);N_GUARD::QAB(C)
      • Refutation
        • K(e);P_SPINS(c),S_FLIGHT,XS(D)
    • Try
      • K(B);S_FLIGHT
      • Threat
        • QAR2(C)
      • Vars
        • Q(j);N_GUARD,XS(F)::QAB1(C),XP(h)
        • S(c);N_GUARD::QAB(C),XS(c)
        • S(c);N_GUARD::QAB(C)
      • Refutation
        • K(e);P_SPINS(c),S_FLIGHT,XS(D)
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAR2(C)
      • Vars
        • K(e);P_SPINP(h),P_SPINS(c),S_FLIGHT::QAB1(C)
        • S(c);N_GUARD::QAB(C),XS(c)
        • S(c);N_GUARD::QAB(C)
      • Refutation
        • Q(j);CHECK,XS(F)
    • Try
      • R(E);CHECK
      • Vars
        • S(c);P_SPINS(c)::QAB(C)
        • P(h);P_SPINP(h)::S(D)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(C);CHECK
      • Vars
        • P(h);XQ(C)::S(D)
      • Refutation
        • S(c);XQ(C)
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • QAR2(C)
    • Vars
      • K(e);OGATEB,P_SPINS(c),S_FLIGHT,XS(D)::QAB1(C)
      • K(e);P_SPINP(h),P_SPINS(c),S_FLIGHT::QAB1(C)
      • Q(j);N_GUARD,XS(F)::QAB1(C),XP(h)
      • S(c);N_GUARD::QAB(C),XS(c)
      • S(c);N_GUARD::QAB(C)
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