MESON Chess Problem Database

Problem Display
PID: 196601 (B3Q3/3pN1K1/2q3Pp/2B1p3/1Pp1kpP1/3r3r/2P1NR2/3R4 w - - 0 1)

Turner, Neal

Suomen Shakki, 1985

B3Q3/3pN1K1/2q3Pp/2B1p3/1Pp1kpP1/3r3r/2P1NR2/3R4

#2

12 + 9

SOLUTION

  • SOUND
  • Tries
    • 1.Sg8?
      • threat
        • 2.Sf6#
      • 1...Kd5
        • 2.Sc3#
        • 2.Sf6#
      • 1...Rd5
        • 2.Rxf4#
      • 1...Rd6
        • 2.Rxf4#
      • 1...d5
        • 2.Rxf4#
      • 1...Rd4!
    • 1.Rxd3?
      • threat
        • 2.Sc3#
      • 1...c3
        • 2.Sxc3#
      • 1...f3
        • 2.Re3#
      • 1...Rxd3!
    • 1.cxd3+?
      • 1...cxd3
        • 2.Sc3#
      • 1...Rxd3!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sf6#
      • 1...Qf6+
        • 2.Sxf6#
      • 1...Qxg6+
        • 2.Qxg6#
      • 1...Kxd5
        • 2.Sc3#
      • 1...Qxd5
        • 2.Rxf4#
      • 1...Qxc5
        • 2.Rxf4#
      • 1...Rxd5
        • 2.Rxf4#
      • 1...Rd4
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(I);P_PINP(f)
      • Threat
        • S(I)
      • Vars
        • R(a);N_SPINQ(g)::R1(D),XP(e)
        • R(a);::R1(D),XP(e)
        • P(i);N_SPINQ(g),SBLOCK::R1(D),XP(e)
      • Refutation
        • R(a);
    • Try
      • R(A);XR(a)
      • Threat
        • S(C)
      • Vars
        • P(c);::S(C),XP(c)
        • P(e);N_GUARD,S_CUTR(b)::R1(A)
      • Refutation
        • R(b);XR(A)
    • Try
      • P(B);CHECK,XR(a)
      • Vars
        • P(c);XP(B)::S(C)
      • Refutation
        • R(b);XP(B)
  • Actual
    • S(I);N_PINQ(g),P_PINP(f)
    • Threat
      • S(I)
    • Vars
      • Q(g);CHECK::B(K)+S(I),DCHECK,XQ(g)
      • Q(g);CHECK,OGATE,XP(H)::QAB(L),XQ(g)
      • K(d);N_SPINP(f),P_SPINQ(g),P_SPINR(a),S_FLIGHT,XS(I)::S(C)
      • Q(g);P_SPINQ(g),XS(I)::R1(D),XP(e)
      • Q(g);XB(G)::R1(D),XP(e)
      • R(a);XS(I)::R1(D),XP(e)
      • R(a);OGATE::R1(A),XR(a)
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