MESON Chess Problem Database

Problem Display
PID: 17708 (BB3Q2/4pn2/2prp2N/K3n2p/R1P2k1P/5pN1/5P2/8 w - - 0 1)

Nanning, Frederik Willem

Tijdschrift vd KNSB, 1948

BB3Q2/4pn2/2prp2N/K3n2p/R1P2k1P/5pN1/5P2/8

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Qxf7#
    • 1...Rd2
      • 2.Qxf7#
    • 1...Rd3
      • 2.Qxf7#
    • 1...Rd4
      • 2.Qxf7#
    • 1...Rd5+
      • 2.cxd5#
    • 1...Rd7
      • 2.Qxf7#
    • 1...Rd8
      • 2.Qxf7#
    • 1...c5
      • 2.Sxh5#
  • Tries
    • 1.Bxd6?
      • threat
        • 2.Qxf7#
        • 2.c5#
      • 1...c5
        • 2.Sxh5#
        • 2.Qxf7#
      • 1...exd6!
    • 1.c5+?
      • 1...Rd4
        • 2.Rxd4#
        • 2.Qxf7#
      • 1...Sc4+!
  • Keys
    • 1.Qg7!
      • 1...Rd5+
        • 2.cxd5#
      • 1...Sxc4+
        • 2.Rxc4#
      • 1...Sxh6
        • 2.Qg5#
      • 1...Rd1
        • 2.Qxf7#
      • 1...Rd2
        • 2.Qxf7#
      • 1...Rd3
        • 2.Qxf7#
      • 1...Rd4
        • 2.Qxf7#
      • 1...Rd7
        • 2.Qxf7#
      • 1...Rd8
        • 2.Qxf7#
      • 1...Sd3
        • 2.Qd4#
      • 1...Sg4
        • 2.Qd4#
        • 2.c5#
      • 1...Sg6
        • 2.Qd4#
        • 2.c5#
      • 1...Sd7
        • 2.Qd4#
        • 2.c5#
      • 1...Sg5
        • 2.Qxg5#
      • 1...Sd8
        • 2.Qg5#
      • 1...Sh8
        • 2.Qg5#
      • 1...c5
        • 2.Sxh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(f);N_SPINS(i),P_SPINS(c)::QAR(J),XS(i)
    • R(f);CHECK,N_SPINS(i),OGATE,P_SPINS(c)::R(C)+P(D),XR(f)
    • P(e);::S(B),XP(d)
  • Tries
    • Try
      • B(I);N_PINS(i),P_PINS(c),XR(f)
      • Threat
        • DUALS(2)
      • Refutation
        • P(h);N_SPINS(c),P_SPINS(i),XB(I)
    • Try
      • P(D);CHECK
      • Refutation
        • S(c);CHECK,N_SPINS(i),P_SPINR(f),P_SPINS(c)
  • Actual
    • Q(J);N_PINS(i)
    • Vars
      • R(f);CHECK,OGATE,P_SPINS(c)::R(C)+P(D),XR(f)
      • S(c);CHECK,OGATE,P_SPINR(f),P_SPINS(c),XP(D)::R(C),XS(c)
      • S(i);N_GUARD,XS(G)::QAB1(J)
      • R(f);P_SPINS(c)::QAR(J),XS(i)
      • S(c);OGATE,P_SPINR(f)::QAR2(J)
      • S(i);N_GUARD::QAB1(J),XS(i)
      • S(i);N_GUARD::QAB1(J)
      • P(e);::S(B),XP(d)
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