MESON Chess Problem Database

Problem Display
PID: 6100 (4K2b/p1RN2kp/r1q1p2N/4P1B1/2P5/5P2/8/nQ6 w - - 0 1)

Mansfield, Comins

5th Prize, Brisbane Courier, 1927

4K2b/p1RN2kp/r1q1p2N/4P1B1/2P5/5P2/8/nQ6

#2

9 + 8

56 The Problemist 1927
3202 Complete Mansfield/I 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf3
      • 2.Sf6#
    • 1...Qe4
      • 2.Sf8#
    • 1...Qxd7+
      • 2.Rxd7#
    • 1...Qa8+
      • 2.Sb8#
    • 1...Qxc4
      • 2.Sc5#
    • 1...Qc5
      • 2.Sxc5#
    • 1...Qb6
      • 2.Sxb6#
  • Tries
    • 1.Be3?
      • threat
        • 2.Qg1#
      • 1...Qxd7+
        • 2.Rxd7#
      • 1...Qa8+
        • 2.Sb8#
      • 1...Qxf3
        • 2.Sf6#
      • 1...Qxc4
        • 2.Sc5#
      • 1...Qe4
        • 2.Sf8#
      • 1...Ra2!
    • 1.Bf4?
      • threat
        • 2.Qg1#
      • 1...Qxd7+
        • 2.Rxd7#
      • 1...Qa8+
        • 2.Sb8#
      • 1...Qxf3
        • 2.Sc5#
        • 2.Sb6#
        • 2.Sf6#
        • 2.Sb8#
        • 2.Sf8#
      • 1...Qe4
        • 2.Sf8#
      • 1...Qc5
        • 2.Sxc5#
      • 1...Qb6
        • 2.Sxb6#
      • 1...Ra2!
    • 1.Qf5?
      • threat
        • 2.Qf6#
        • 2.Qf7#
      • 1...Qxd7+
        • 2.Rxd7#
      • 1...Qa8+
        • 2.Sb8#
      • 1...Qxf3
        • 2.Sc5#
        • 2.Sb6#
        • 2.Sf6#
        • 2.Sb8#
        • 2.Sf8#
      • 1...exf5!
  • Keys
    • 1.Bd2!
      • threat
        • 2.Qg1#
      • 1...Qxd7+
        • 2.Rxd7#
      • 1...Qa8+
        • 2.Sb8#
      • 1...Qxf3
        • 2.Sf6#
      • 1...Qxc4
        • 2.Sc5#
      • 1...Qe4
        • 2.Sf8#
      • 1...Qc5
        • 2.Sxc5#
      • 1...Qb6
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(c);N_PINS(H),XP(B)::R(G)+S(H)
    • Q(c);N_PINS(H)::R(G)+S(H)
    • Q(c);CHECK,OGATE,P_SPINQ(c),XS(H)::R(G),XQ(c)
    • Q(c);CHECK,N_PINS(H)::R(G)+S(H)
    • Q(c);N_PINS(H),XP(C)::R(G)+S(H)
    • Q(c);N_PINS(H)::R(G)+S(H),XQ(c)
  • Tries
    • Try
      • B(E);
      • Threat
        • QAR(A)
      • Vars
        • Q(c);CHECK,OGATE,P_SPINQ(c),XS(H)::R(G),XQ(c)
        • Q(c);CHECK,N_PINS(H)::R(G)+S(H)
        • Q(c);N_PINS(H),XP(B)::R(G)+S(H)
        • Q(c);N_PINS(H),XP(C)::R(G)+S(H)
        • Q(c);N_PINS(H)::R(G)+S(H)
      • Refutation
        • R(b);
    • Try
      • B(E);
      • Threat
        • QAR(A)
      • Vars
        • Q(c);CHECK,OGATE,P_SPINQ(c),XS(H)::R(G),XQ(c)
        • Q(c);CHECK,N_PINS(H)::R(G)+S(H)
        • Q(c);N_PINS(H)::R(G)+S(H)
        • Q(c);N_PINS(H)::R(G)+S(H),XQ(c)
      • Refutation
        • R(b);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);CHECK,OGATE,P_SPINQ(c),XS(H)::R(G),XQ(c)
        • Q(c);CHECK,N_PINS(H)::R(G)+S(H)
      • Refutation
        • P(d);XQ(A)
  • Actual
    • B(E);
    • Threat
      • QAR(A)
    • Vars
      • Q(c);CHECK,OGATE,P_SPINQ(c),XS(H)::R(G),XQ(c)
      • Q(c);CHECK,N_PINS(H)::R(G)+S(H)
      • Q(c);N_PINS(H),XP(B)::R(G)+S(H)
      • Q(c);N_PINS(H),XP(C)::R(G)+S(H)
      • Q(c);N_PINS(H)::R(G)+S(H)
      • Q(c);N_PINS(H)::R(G)+S(H),XQ(c)
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