MESON Chess Problem Database

Problem Display
PID: 267559 (2r2nb1/2b1prq1/8/3R4/R2PkP2/4N3/K3Q2N/6B1 w - - 0 1)

Bottacchi, Antonio

L'Illustrazione Italiana, 1919

2r2nb1/2b1prq1/8/3R4/R2PkP2/4N3/K3Q2N/6B1

#2

9 + 8

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf4
      • 2.Qf3#
    • 1...Qxd4
      • 2.Raxd4#
      • 2.Rdxd4#
    • 1...Qe5
      • 2.dxe5#
    • 1...Rxf4
      • 2.Qc2#
    • 1...e5
      • 2.dxe5#
  • Tries
    • 1.Sd1+?
      • 1...Kxf4
        • 2.Qf3#
        • 2.Qe3#
      • 1...Kxd5!
    • 1.Sef1+?
      • 1...Kxf4
        • 2.Qf3#
        • 2.Qe3#
      • 1...Kxd5!
    • 1.Sc2+?
      • 1...Kxf4
        • 2.Qf3#
        • 2.Qe3#
      • 1...Kxd5!
    • 1.Sc4+?
      • 1...Kxf4
        • 2.Qf3#
        • 2.Qe3#
      • 1...Kxd5!
    • 1.Seg4+?
      • 1...Kxf4
        • 2.Qf3#
        • 2.Qe3#
      • 1...Kxd5!
    • 1.Sf5+?
      • 1...Kxf4
        • 2.Qe3#
      • 1...Kxd5!
    • 1.Re5+?
      • 1...Kxf4
        • 2.Qf3#
        • 2.Qf2#
      • 1...Qxe5
        • 2.dxe5#
      • 1...Bxe5!
    • 1.Qg2+?
      • 1...Kd3
        • 2.Ra3#
        • 2.Qc2#
      • 1...Kxf4
        • 2.Qf3#
      • 1...Qxg2+!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Sg2#
      • 1...Rxf4+
        • 2.Sc4#
      • 1...Rf5+
        • 2.Sd5#
      • 1...Rf6+
        • 2.d5#
      • 1...Kxf4
        • 2.Qf3#
      • 1...Qxg1
        • 2.d5#
      • 1...Bxf4
        • 2.Qc2#
      • 1...Qe5
        • 2.dxe5#
      • 1...Qg2
        • 2.Sxg2#
        • 2.d5#
      • 1...Qg3
        • 2.d5#
      • 1...Qg4
        • 2.d5#
      • 1...Be5
        • 2.dxe5#
      • 1...e5
        • 2.dxe5#
        • 2.d5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • K(a);N_GUARD,P-FLIGHT,XP(H)::QAR1(C)
    • Q(e);OGATE::R(F)+P(G),XQ(e)
    • R(d);P_PINR(I),SBLOCK,XP(H)::QAB(C)
    • P(c);OGATE::R(F)+P(G),XP(c)
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XR(I)
    • Try
      • S(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XR(I)
    • Try
      • S(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XR(I)
    • Try
      • S(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XR(I)
    • Try
      • S(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XR(I)
    • Try
      • S(E);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT,XP(H)::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT,XR(I)
    • Try
      • R(I);CHECK
      • Vars
        • Q(e);OGATE,XR(I)::R(F)+P(G),XQ(e)
      • Refutation
        • B(b);XR(I)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT,XP(H)::QAR1(C)
      • Refutation
        • Q(e);CHECK,XQ(C)
  • Actual
    • R(I);
    • Threat
      • QAR(C)+S(E)
    • Vars
      • R(d);CHECK,SBLOCK,XP(H)::QAR(C)+S(E)
      • R(d);CHECK,SBLOCK::QAR(C)+S(E)
      • R(d);CHECK,S_CUTQ(e)::R(F)+P(G)
      • K(a);N_GUARD,P-FLIGHT,XP(H)::QAR1(C)
      • Q(e);N_GUARD,XB(A)::R(F)+P(G)
      • B(b);SBLOCK,XP(H)::QAB(C)
      • Q(e);OGATE::R(F)+P(G),XQ(e)
      • Q(e);N_GUARD::R(F)+P(G)
      • B(b);OGATE::R(F)+P(G),XB(b)
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