MESON Chess Problem Database

Problem Display
PID: 54665 (r3k2r/3pbp1n/PR1PN2P/BK2Q3/2p5/1p1pp3/8/3q4 w qk - 0 1)

Mansfield, Comins

5th HM., Schach-Echo, 1971/II

r3k2r/3pbp1n/PR1PN2P/BK2Q3/2p5/1p1pp3/8/3q4

#2

8 + 12

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Tries
    • 1.Sd4?
      • threat
        • 2.Qxe7#
      • 1...Kd8
        • 2.Rb8#
      • 1...Kf8
        • 2.Qxh8#
      • 1...0-0
        • 2.Qg7#
      • 1...0-0-0
        • 2.Qc5#
      • 1...Qh5!
    • 1.Sf4?
      • threat
        • 2.Qxe7#
      • 1...Kd8
        • 2.Rb8#
      • 1...Kf8
        • 2.Qxh8#
      • 1...0-0
        • 2.Qg7#
      • 1...0-0-0
        • 2.Qc5#
      • 1...Qh5!
    • 1.Sc5?
      • threat
        • 2.Qxe7#
      • 1...Kd8
        • 2.Rb8#
      • 1...Kf8
        • 2.Qxh8#
      • 1...0-0
        • 2.Qg7#
      • 1...0-0-0!
    • 1.Sc7+?
      • 1...Kf8
        • 2.Qg7#
        • 2.Qxh8#
      • 1...Kd8!
    • 1.Sg7+?
      • 1...Kd8
        • 2.Rc6#
        • 2.Rb8#
      • 1...Kf8!
    • 1.Sd8?
      • threat
        • 2.Qxe7#
      • 1...Kxd8
        • 2.Rb8#
      • 1...Kf8
        • 2.Qxh8#
      • 1...0-0
        • 2.Qg7#
      • 1...Qh5!
    • 1.Sf8?
      • threat
        • 2.Qxe7#
      • 1...Kd8
        • 2.Rb8#
      • 1...Kxf8
        • 2.Qxh8#
      • 1...0-0-0
        • 2.Qc5#
      • 1...Qh5!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Qxe7#
      • 1...Kd8
        • 2.Rb8#
      • 1...Kf8
        • 2.Qxh8#
      • 1...0-0
        • 2.Qg7#
      • 1...0-0-0
        • 2.Qc5#

This is a version of 176602

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);P_PINB(g)
      • Threat
        • QAR1(C),XB(g)
      • Vars
        • K(k);N_SPINB(g),P-FLIGHT::B(A)+R(E),DCHECK
        • K(k);N_SPINB(g),P-FLIGHT::QAR2(C),XR(l)
        • K(k);0-0,N_SPINB(g),OGATEB::QAR1(C)
        • K(k);0-0-0,N_SPINB(g),OGATEB::QAR(C)
      • Refutation
        • Q(a);P_PINQ(C)
    • Try
      • S(G);P_PINB(g)
      • Threat
        • QAR1(C),XB(g)
      • Vars
        • K(k);N_SPINB(g),P-FLIGHT::B(A)+R(E),DCHECK
        • K(k);N_SPINB(g),P-FLIGHT::QAR2(C),XR(l)
        • K(k);0-0,N_SPINB(g),OGATEB::QAR1(C)
        • K(k);0-0-0,N_SPINB(g),OGATEB::QAR(C)
      • Refutation
        • Q(a);P_PINQ(C)
    • Try
      • S(G);P_PINB(g)
      • Threat
        • QAR1(C),XB(g)
      • Vars
        • K(k);N_SPINB(g),P-FLIGHT::B(A)+R(E),DCHECK
        • K(k);N_SPINB(g),P-FLIGHT::QAR2(C),XR(l)
        • K(k);0-0,N_SPINB(g),OGATEB::QAR1(C)
      • Refutation
        • K(k);0-0-0,N_SPINB(g)
    • Try
      • S(G);CHECK,P_PINB(g)
      • Refutation
        • K(k);N_SPINB(g),P-FLIGHT
    • Try
      • S(G);CHECK,P_PINB(g)
      • Refutation
        • K(k);N_SPINB(g),P-FLIGHT
    • Try
      • S(G);P_PINB(g)
      • Threat
        • QAR1(C),XB(g)
      • Vars
        • K(k);N_SPINB(g),OGATEB,P-FLIGHT,XS(G)::B(A)+R(E),DCHECK
        • K(k);N_SPINB(g),P-FLIGHT::QAR2(C),XR(l)
        • K(k);0-0,N_SPINB(g),OGATEB::QAR1(C)
      • Refutation
        • Q(a);P_PINQ(C)
    • Try
      • S(G);P_PINB(g)
      • Threat
        • QAR1(C),XB(g)
      • Vars
        • K(k);N_SPINB(g),P-FLIGHT::B(A)+R(E),DCHECK
        • K(k);N_SPINB(g),OGATEB,P-FLIGHT,XS(G)::QAR2(C),XR(l)
        • K(k);0-0-0,N_SPINB(g),OGATEB::QAR(C)
      • Refutation
        • Q(a);P_PINQ(C)
  • Actual
    • S(G);P_PINB(g)
    • Threat
      • QAR1(C),XB(g)
    • Vars
      • K(k);N_SPINB(g),P-FLIGHT::B(A)+R(E),DCHECK
      • K(k);N_SPINB(g),P-FLIGHT::QAR2(C),XR(l)
      • K(k);0-0,N_SPINB(g),OGATEB::QAR1(C)
      • K(k);0-0-0,N_SPINB(g),OGATEB::QAR(C)
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