MESON Chess Problem Database

Problem Display
PID: 267065 (8/K7/8/7B/4P1pB/1Q6/R2PkpR1/6b1 w - - 0 1)

Ceriani, Luigi

Chess Amateur (The), 1926

8/K7/8/7B/4P1pB/1Q6/R2PkpR1/6b1

#2

8 + 4

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Bxg4+?
      • 1...Ke1
        • 2.Rxg1#
        • 2.Qd1#
        • 2.Qb1#
      • 1...Kf1!
    • 1.Rxf2+?
      • 1...Ke1
        • 2.Ra1#
        • 2.Qb1#
      • 1...Bxf2+!
    • 1.Qc4+?
      • 1...Kd1
        • 2.Qf1#
      • 1...Ke1
        • 2.Rxg1#
      • 1...Kf3!
    • 1.Qd3+?
      • 1...Kd1
        • 2.Ra1#
        • 2.Qf1#
      • 1...Ke1
        • 2.Ra1#
        • 2.Rxg1#
      • 1...Kxd3!
    • 1.Qb5+?
      • 1...Kd1
        • 2.Qf1#
      • 1...Ke1
        • 2.Rxg1#
      • 1...Kf3!
    • 1.d4+?
      • 1...Ke1
        • 2.Rxg1#
        • 2.Qb1#
      • 1...Kf1!
  • Keys
    • 1.Rxg4!
      • threat
        • 2.Rxg1#
      • 1...f1Q+
        • 2.d4#
      • 1...f1R+
        • 2.d4#
      • 1...Ke1
        • 2.Rxg1#
      • 1...Kf1
        • 2.Qd1#
      • 1...Bh2
        • 2.Rg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(G);CHECK,XP(d)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
    • Try
      • R(C);CHECK,P_PINP(d),P_SPINR(C),XP(c)
      • Refutation
        • B(a);CHECK,XR(C)
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);N_SPINP(c),OGATE,P_SPINP(d),S_FLIGHT::QAR2(D)
        • K(b);N_GUARD,P-FLIGHT::R(C),XB(a)
      • Refutation
        • K(b);N_SPINP(c),P_SPINP(d),S_FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT,XQ(D)
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);N_SPINP(c),OGATE,P_SPINP(d),S_FLIGHT::QAR2(D)
        • K(b);N_GUARD,P-FLIGHT::R(C),XB(a)
      • Refutation
        • K(b);N_SPINP(c),P_SPINP(d),S_FLIGHT
    • Try
      • P(B);CHECK
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
  • Actual
    • R(C);N_PINP(c),XP(d)
    • Threat
      • B(G)+R(C),XB(a)
    • Vars
      • P(c);CHECK,SBLOCK::R(A)+P(B)
      • K(b);P-FLIGHT,P_SPINP(c)::R(C),XB(a)
      • K(b);N_GUARD,S_FLIGHT::QAR2(D)
      • B(a);::B(G)+R(C)
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