MESON Chess Problem Database

Problem Display
PID: 270063 (4r3/1p1p2B1/3Q1b2/4R2r/1K4B1/1p6/pRN4p/q1k5 w - - 0 1)

Chicco, Adriano

De Schaakwereld, 1936

4r3/1p1p2B1/3Q1b2/4R2r/1K4B1/1p6/pRN4p/q1k5

#2

7 + 10

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb2
      • 2.Qd1#
    • 1...Be7
      • 2.Re1#
  • Tries
    • 1.Sxa1?
      • threat
        • 2.Qd2#
      • 1...Bg5
        • 2.Rc5#
      • 1...Be7
        • 2.Re1#
      • 1...Kxb2!
    • 1.Se1?
      • threat
        • 2.Sd3#
        • 2.Qd2#
      • 1...Qxb2
        • 2.Qd1#
      • 1...Qb1
        • 2.Qd2#
      • 1...Rh3
        • 2.Qd2#
      • 1...Bg5
        • 2.Sd3#
        • 2.Rc5#
      • 1...Be7
        • 2.Sd3#
      • 1...Kxb2!
    • 1.Qd2+?
      • 1...Kxb2
        • 2.Sa3#
      • 1...Kxd2!
  • Keys
    • 1.Sa3!
      • threat
        • 2.Qd2#
      • 1...Kxb2
        • 2.Qd2#
      • 1...Qxb2
        • 2.Qd1#
      • 1...Bg5
        • 2.Rc5#
      • 1...Be7
        • 2.Re1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(a);SBLOCK,XR(A)::QAR1(F)
    • B(g);P_PINQ(F),S_CUTR(j)::R(E)
  • Tries
    • Try
      • S(B);XQ(a)
      • Threat
        • QAB1(F)
      • Vars
        • B(g);N_GUARD,S_CUTR(f)::R(E)
        • B(g);P_PINQ(F),S_CUTR(j)::R(E)
      • Refutation
        • K(b);S_FLIGHT,XR(A)
    • Try
      • S(B);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);SBLOCK,XR(A)::QAR1(F)
        • Q(a);::QAB1(F)
        • R(f);::QAB1(F)
        • B(g);P_PINQ(F)::S(B)
      • Refutation
        • K(b);S_FLIGHT,XR(A)
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);S_FLIGHT,XR(A)::QAR(F)+S(B)
      • Refutation
        • K(b);S_FLIGHT,XQ(F)
  • Actual
    • S(B);
    • Threat
      • QAB1(F)
    • Vars
      • K(b);S_FLIGHT,XR(A)::QAR2(F)
      • Q(a);SBLOCK,XR(A)::QAR1(F)
      • B(g);N_GUARD,S_CUTR(f)::R(E)
      • B(g);P_PINQ(F),S_CUTR(j)::R(E)
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