MESON Chess Problem Database

Problem Display
PID: 60175 (8/1pK5/3P4/p1N1pB2/Pbk1N2R/1p6/1P1prPQ1/n1r5 w - - 0 1)

Solheim, Ivar

4th Prize, Brisbane Courier, 1931

8/1pK5/3P4/p1N1pB2/Pbk1N2R/1p6/1P1prPQ1/n1r5

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc5
      • 2.Sxd2#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Sxd2#
      • 1...Kxd3+
        • 2.Sc5#
      • 1...Kd5+
        • 2.Sc3#
      • 1...Bxd6+
        • 2.Sxd6#
      • 1...Rxe4
        • 2.Qxe4#
      • 1...d1Q
        • 2.Sd2#
      • 1...d1S
        • 2.Sd2#
      • 1...d1B
        • 2.Sd2#
      • 1...d1R
        • 2.Sd2#
      • 1...Kd4+!
    • 1.Sxb7?
      • threat
        • 2.Sxd2#
      • 1...Kd3+
        • 2.Sec5#
      • 1...Kd5+
        • 2.Sc3#
      • 1...Bxd6+
        • 2.Sexd6#
      • 1...Rxe4
        • 2.Qxe4#
      • 1...d1Q
        • 2.Sd2#
      • 1...d1S
        • 2.Sd2#
      • 1...d1B
        • 2.Sd2#
      • 1...d1R
        • 2.Sd2#
      • 1...Kd4+!
    • 1.Sd7?
      • threat
        • 2.Sxd2#
      • 1...Kd3+
        • 2.Sec5#
      • 1...Kd5+
        • 2.Sc3#
      • 1...Bxd6+
        • 2.Sxd6#
      • 1...Rxe4
        • 2.Qxe4#
      • 1...d1Q
        • 2.Sd2#
      • 1...d1S
        • 2.Sd2#
      • 1...d1B
        • 2.Sd2#
      • 1...d1R
        • 2.Sd2#
      • 1...Kd4+!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sxd2#
      • 1...Kd3+
        • 2.S4c5#
      • 1...Kd5+
        • 2.Sc3#
      • 1...Bxd6+
        • 2.Sxd6#
      • 1...Rxe4
        • 2.Qxe4#
      • 1...d1Q
        • 2.Sd2#
      • 1...d1S
        • 2.Sd2#
      • 1...d1B
        • 2.Sd2#
      • 1...d1R
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • B(f);SBLOCK,XS(G)::R(F)+S(E),DCHECK,XP(c)
  • Tries
    • Try
      • S(G);
      • Threat
        • R(F)+S(E),DCHECK,XP(c)
      • Vars
        • K(g);CHECK,S_FLIGHT,XS(G)::B(H)+S(E),DCHECK
        • K(g);CHECK,S_FLIGHT::QAB(C)+S(E),DCHECK
        • B(f);CHECK,XP(I)::R(F)+S(E),DCHECK,XB(f)
        • R(d);OGATE,P_SPINR(d),XS(E)::QAR2(C),XR(d)
        • P(c);::R(F)+S(E),DCHECK
      • Refutation
        • K(g);CHECK,P-FLIGHT
    • Try
      • S(G);XP(j)
      • Threat
        • R(F)+S(E),DCHECK,XP(c)
      • Vars
        • K(g);CHECK,S_FLIGHT::B(H)+S(E),DCHECK
        • K(g);CHECK,S_FLIGHT::QAB(C)+S(E),DCHECK
        • B(f);CHECK,XP(I)::R(F)+S(E),DCHECK,XB(f)
        • R(d);OGATE,P_SPINR(d),XS(E)::QAR2(C),XR(d)
        • P(c);::R(F)+S(E),DCHECK
      • Refutation
        • K(g);CHECK,P-FLIGHT
    • Try
      • S(G);
      • Threat
        • R(F)+S(E),DCHECK,XP(c)
      • Vars
        • K(g);CHECK,S_FLIGHT::B(H)+S(E),DCHECK
        • K(g);CHECK,S_FLIGHT::QAB(C)+S(E),DCHECK
        • B(f);CHECK,XP(I)::R(F)+S(E),DCHECK,XB(f)
        • R(d);OGATE,P_SPINR(d),XS(E)::QAR2(C),XR(d)
        • P(c);::R(F)+S(E),DCHECK
      • Refutation
        • K(g);CHECK,P-FLIGHT
  • Actual
    • S(G);
    • Threat
      • R(F)+S(E),DCHECK,XP(c)
    • Vars
      • K(g);CHECK,S_FLIGHT::B(H)+S(E),DCHECK
      • K(g);CHECK,S_FLIGHT::QAB(C)+S(E),DCHECK
      • B(f);CHECK,XP(I)::R(F)+S(E),DCHECK,XB(f)
      • R(d);OGATE,P_SPINR(d),XS(E)::QAR2(C),XR(d)
      • P(c);::R(F)+S(E),DCHECK
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