MESON Chess Problem Database

Problem Display
PID: 201678 (qQ3R2/r1rR4/p3P1P1/P1Bbk3/5N2/1p3p2/5N2/2K5 w - - 0 1)

Kovacs, Florian Janos

Chess Amateur (The), 1922

qQ3R2/r1rR4/p3P1P1/P1Bbk3/5N2/1p3p2/5N2/2K5

#2

10 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb8
      • 2.Rxd5#
    • 1...Rb7
      • 2.Rxd5#
    • 1...Bc4
      • 2.Bd4#
    • 1...Be4
      • 2.Sg4#
    • 1...Bc6
      • 2.Bd4#
    • 1...Bxe6
      • 2.S4d3#
    • 1...Bb7
      • 2.Qxc7#
    • 1...b2+
      • 2.Qxb2#
  • Tries
    • 1.Rdf7?
      • threat
        • 2.Rf5#
      • 1...b2+
        • 2.Qxb2#
      • 1...Be4
        • 2.Sg4#
      • 1...Bxe6!
    • 1.Rh7?
      • threat
        • 2.Rh5#
      • 1...b2+
        • 2.Qxb2#
      • 1...Be4
        • 2.Sg4#
      • 1...Bxe6!
  • Keys
    • 1.Rff7!
      • 1...b2+
        • 2.Qxb2#
      • 1...Qxb8
        • 2.Rxd5#
      • 1...Bxe6
        • 2.S4d3#
      • 1...Qc6
        • 2.Qh8#
      • 1...Qb7
        • 2.Qh8#
      • 1...Rb7
        • 2.Rxd5#
      • 1...Bc4
        • 2.Bd4#
      • 1...Be4
        • 2.Sg4#
      • 1...Bc6
        • 2.Bd4#
      • 1...Bb7
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(h);N_GUARD,N_SPINR(g),XQ(I)::R1(H),XB(c)
    • R(f);S_CUTQ(h)::R1(H),XB(c)
    • B(c);N_PINB(E)::B(E)
    • B(c);SBLOCK::S(B)
    • B(c);SBLOCK,XP(F)::S(C)
    • B(c);S_CUTR(f)::QAB(I),XR(g)
    • P(a);CHECK,OGATE::QAB(I),XP(a)
  • Tries
    • Try
      • R(H);
      • Threat
        • R1(H)
      • Vars
        • P(a);CHECK,OGATE::QAB(I),XP(a)
        • B(c);SBLOCK::S(B)
      • Refutation
        • B(c);XP(F)
    • Try
      • R(H);
      • Threat
        • R(H)
      • Vars
        • P(a);CHECK,OGATE::QAB(I),XP(a)
        • B(c);SBLOCK::S(B)
      • Refutation
        • B(c);XP(F)
  • Actual
    • R(J);
    • Vars
      • P(a);CHECK,OGATE::QAB(I),XP(a)
      • Q(h);N_GUARD,N_SPINR(g),XQ(I)::R1(H),XB(c)
      • B(c);SBLOCK,XP(F)::S(C)
      • Q(h);N_GUARD::QAB(I)
      • R(f);S_CUTQ(h)::R1(H),XB(c)
      • B(c);N_PINB(E)::B(E)
      • B(c);SBLOCK::S(B)
      • B(c);S_CUTR(f)::QAB(I),XR(g)
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