MESON Chess Problem Database

Problem Display
PID: 110043 (8/1p6/kp6/pR1P4/Q7/K3B3/8/8 w - - 0 1)

Campo, Achille

Fanfulla da Lodi, 1886-1888

8/1p6/kp6/pR1P4/Q7/K3B3/8/8

#2

5 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Bc5?
      • 1...bxc5
        • 2.Qxa5#
      • 1...Ka7!
    • 1.Rb1?
      • 1...b5
        • 2.Qxb5#
      • 1...Ka7!
    • 1.Rb2?
      • 1...b5
        • 2.Qxb5#
      • 1...Ka7!
    • 1.Rb3?
      • 1...b5
        • 2.Qxb5#
      • 1...Ka7!
    • 1.Rb4?
      • 1...b5
        • 2.Qxb5#
      • 1...Ka7!
    • 1.Qd1?
      • 1...Kxb5
        • 2.Qe2#
        • 2.Qf1#
        • 2.Qd3#
      • 1...a4
        • 2.Qxa4#
      • 1...Ka7!
    • 1.Qc2?
      • 1...Kxb5
        • 2.Qd3#
        • 2.Qe2#
      • 1...a4
        • 2.Qxa4#
      • 1...Ka7!
    • 1.Qb3?
      • 1...a4
        • 2.Qxa4#
      • 1...Ka7!
    • 1.Qc4?
      • 1...a4
        • 2.Qxa4#
      • 1...Ka7!
    • 1.Qd4?
      • threat
        • 2.Qxb6#
      • 1...Kxb5
        • 2.Qd3#
      • 1...Ka7!
    • 1.Qe4?
      • 1...Kxb5
        • 2.Qd3#
      • 1...a4
        • 2.Qxa4#
      • 1...Ka7!
    • 1.Qg4?
      • 1...Kxb5
        • 2.Qe2#
      • 1...a4
        • 2.Qxa4#
      • 1...Ka7!
  • Keys
    • 1.Qf4!
      • 1...Kxb5
        • 2.Qf1#
      • 1...Ka7
        • 2.Rxa5#
      • 1...a4
        • 2.Qxa4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);
      • Vars
        • P(c);N_GUARD,XB(B)::QAR1(C),XP(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(D);
      • Vars
        • P(c);::QAB1(C),XP(c)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(D);
      • Vars
        • P(c);::QAB1(C),XP(c)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(D);
      • Vars
        • P(c);::QAB1(C),XP(c)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(D);
      • Vars
        • P(c);::QAB1(C),XP(c)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);N_PINP(a)
      • Vars
        • P(a);OGATEB::QAR2(C),XP(a)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(C);N_PINP(a)
      • Vars
        • P(a);OGATEB::QAR2(C),XP(a)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(C);N_PINP(a)
      • Vars
        • P(a);OGATEB::QAR2(C),XP(a)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(C);N_PINP(a)
      • Vars
        • P(a);OGATEB::QAR2(C),XP(a)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(C);N_PINP(a)
      • Threat
        • QAR1(C),XP(c)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XR(D)::QAB(C)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(C);N_PINP(a)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XR(D)::QAB(C)
        • P(a);OGATEB::QAR2(C),XP(a)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(C);N_PINP(a)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XR(D)::QAB(C)
        • P(a);OGATEB::QAR2(C),XP(a)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
  • Actual
    • Q(C);N_PINP(a)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XR(D)::QAB(C)
      • K(b);P-FLIGHT,P_SPINP(c)::R(D),XP(a)
      • P(a);OGATEB::QAR2(C),XP(a)
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