MESON Chess Problem Database

Problem Display
PID: 205800 (6K1/3p4/Q1pP3N/8/p1p3Rb/Rb3k1p/3Pp1r1/4B2B w - - 0 1)

Cancelliere, Giuseppe

L'Alfiere di Re, 1925

6K1/3p4/Q1pP3N/8/p1p3Rb/Rb3k1p/3Pp1r1/4B2B

#2

9 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...h2
      • 2.Bxg2#
    • 1...c5
      • 2.Qb7#
      • 2.Qa8#
  • Tries
    • 1.Rxb3+?
      • 1...cxb3
        • 2.Qd3#
      • 1...c3
        • 2.Rxc3#
        • 2.Qd3#
      • 1...axb3!
    • 1.Qb6?
      • threat
        • 2.Qe3#
      • 1...Bf2
        • 2.Qxf2#
      • 1...Bg5
        • 2.Qf2#
      • 1...c5
        • 2.Qb7#
      • 1...c3+!
    • 1.Qa7?
      • threat
        • 2.Qe3#
      • 1...Bf2
        • 2.Qxf2#
      • 1...Bg5
        • 2.Qf2#
      • 1...c5
        • 2.Qb7#
        • 2.Qa8#
      • 1...c3+!
  • Keys
    • 1.Qxc4!
      • 1...Bxe1
        • 2.Qf7#
      • 1...Bf2
        • 2.Qf7#
      • 1...Bg3
        • 2.Rxg3#
      • 1...Bg5
        • 2.Rg3#
      • 1...Bf6
        • 2.Rg3#
      • 1...Be7
        • 2.Rg3#
      • 1...Bd8
        • 2.Rg3#
      • 1...h2
        • 2.Bxg2#
      • 1...c5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • P(e);N_GUARD::B(B),XR(b)
  • Tries
    • Try
      • R(D);CHECK,XB(c)
      • Vars
        • P(g);OGATE,XR(D)::QAR2(F)
      • Refutation
        • P(f);XR(D)
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • B(h);N_GUARD::QAR1(F),XB(h)
        • B(h);N_GUARD,N_PINR(E)::QAR1(F)
        • P(i);OGATEB::QAB(F)
      • Refutation
        • P(g);CHECK,N_SPINB(c)
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • B(h);N_GUARD::QAR1(F),XB(h)
        • B(h);N_GUARD,N_PINR(E)::QAR1(F)
      • Refutation
        • P(g);CHECK,N_SPINB(c)
  • Actual
    • Q(F);P_SPINQ(F),XP(g)
    • Vars
      • B(h);N_GUARD,XB(A)::QAR(F)
      • B(h);N_GUARD::QAR(F)
      • B(h);N_GUARD,N_PINR(E)::R1(E),XB(h)
      • B(h);N_GUARD,N_PINR(E)::R1(E)
      • B(h);N_GUARD::R1(E)
      • P(e);N_GUARD::B(B),XR(b)
      • P(i);N_GUARD::QAB(F)
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