MESON Chess Problem Database

Problem Display
PID: 53102 (2q3n1/4R2K/5pN1/R2b1Pb1/3kn3/1P2p3/3PP3/3Q2BB w - - 0 1)

Gabor, Nicholas

Chess Life, 1954

2q3n1/4R2K/5pN1/R2b1Pb1/3kn3/1P2p3/3PP3/3Q2BB

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.dxe3#
    • 1...Bxb3
      • 2.Rxe4#
    • 1...Bc4
      • 2.Rxe4#
    • 1...Bf7
      • 2.Rxe4#
    • 1...Bh4
      • 2.Bxe3#
    • 1...Sxd2
      • 2.Qxd2#
    • 1...Sf2
      • 2.Rxd5#
    • 1...Sc3
      • 2.dxe3#
    • 1...Sg3
      • 2.Rxd5#
    • 1...Sc5
      • 2.Qa1#
    • 1...Sd6
      • 2.Rxd5#
  • Tries
    • 1.Qa1+?
      • 1...Sc3
        • 2.Rxd5#
      • 1...Qc3!
  • Keys
    • 1.Sh4!
      • threat
        • 2.Sf3#
      • 1...Qxf5+
        • 2.Sxf5#
      • 1...Bxb3
        • 2.Rxe4#
      • 1...Bxh4
        • 2.Bxe3#
      • 1...Sxd2
        • 2.Qxd2#
      • 1...Sf2
        • 2.Rxd5#
      • 1...Sc3
        • 2.dxe3#
      • 1...Sg3
        • 2.Rxd5#
      • 1...Sc5
        • 2.Qa1#
      • 1...Sd6
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(g);SBLOCK::QAR(A)+P(D)DCHECK,XP(a)
    • B(d);N_GUARD,XP(F)::R1(J),XS(c)
    • B(d);N_GUARD::R1(J),XS(c)
    • B(e);N_GUARD::B(B),XP(a)
    • S(c);OGATE,P_SPINS(c),XP(D)::QAR2(A),XS(c)
    • S(c);N_SPINP(a)::R1(G),XB(d)
    • S(c);SBLOCK::QAR(A)+P(D)DCHECK,XP(a)
    • S(c);::R1(G),XB(d)
    • S(c);N_GUARD,S_CUTQ(g)::QAB(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • S(c);P_SPINS(c)::R1(G),XB(d)
      • Refutation
        • Q(g);P_SPINQ(g)
  • Actual
    • S(I);
    • Threat
      • S(I)
    • Vars
      • Q(g);CHECK,XP(H)::S(I),XQ(g)
      • B(d);N_GUARD,XP(F)::R1(J),XS(c)
      • B(e);N_GUARD,XS(I)::B(B),XP(a)
      • S(c);OGATE,P_SPINS(c),XP(D)::QAR2(A),XS(c)
      • S(c);N_SPINP(a)::R1(G),XB(d)
      • S(c);SBLOCK::QAR(A)+P(D)DCHECK,XP(a)
      • S(c);::R1(G),XB(d)
      • S(c);N_GUARD,S_CUTQ(g)::QAB(A)
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