MESON Chess Problem Database

Problem Display
PID: 16401 (Q2K4/8/8/1n1R1R2/4k3/8/8/8 w - - 0 1)

Wenman, Francis Percival (aka Percy Wenman)

Fifty Two-Move Problems, 1940

Q2K4/8/8/1n1R1R2/4k3/8/8/8

#2

4 + 2

3713 Snap 2007

SOLUTION

  • SOUND
  • Tries
    • 1.Rd1+?
      • 1...Ke3
        • 2.Qf3#
      • 1...Kxf5!
    • 1.Rd6+?
      • 1...Ke3
        • 2.Qf3#
      • 1...Kxf5!
    • 1.Rd7+?
      • 1...Ke3
        • 2.Qf3#
      • 1...Kxf5!
    • 1.Qa1?
      • threat
        • 2.Qe5#
        • 2.Qe1#
      • 1...Ke3
        • 2.Qe5#
        • 2.Qe1#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sc3!
    • 1.Qa3?
      • threat
        • 2.Qe7#
        • 2.Qd3#
        • 2.Qf3#
      • 1...Sc3
        • 2.Qe7#
      • 1...Sd6
        • 2.Qd3#
        • 2.Qf3#
      • 1...Sd4
        • 2.Rde5#
      • 1...Sc7
        • 2.Qd3#
        • 2.Qf3#
      • 1...Sxa3!
    • 1.Qa4+?
      • 1...Sd4
        • 2.Qxd4#
      • 1...Ke3!
    • 1.Qa7?
      • threat
        • 2.Qe7#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sc7
        • 2.Qd4#
      • 1...Sxa7!
  • Keys
    • 1.Qa6!
      • threat
        • 2.Qe6#
      • 1...Ke3
        • 2.Qe6#
      • 1...Sd6
        • 2.Qe2#
        • 2.Qd3#
      • 1...Sd4
        • 2.Rde5#
      • 1...Sc7
        • 2.Qe2#
        • 2.Qd3#

Anticipated by 30950(1904)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • R(A);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • R(A);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);N_GUARD::QAR1(C),XS(b)
      • Refutation
        • S(b);
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • S(b);::QAR(C)
        • S(b);SBLOCK::R1(A)
      • Refutation
        • S(b);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(C),XS(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR(C)
      • Vars
        • S(b);N_GUARD::QAR1(C),XS(b)
        • S(b);N_GUARD::QAR1(C)
      • Refutation
        • S(b);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR2(C)
    • Vars
      • K(a);P-FLIGHT::QAR(C)
      • S(b);SBLOCK::R1(A)
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