MESON Chess Problem Database

Problem Display
PID: 231061 (8/8/8/8/8/4p2B/7k/K3Q1Nr w - - 0 1)

Cuppini, Alessandro

Kudesnik, 2006

8/8/8/8/8/4p2B/7k/K3Q1Nr

#2

4 + 3

5454 Near Snap 2021
15148 Sadier Collection 2021
3713 Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...e2
      • 2.Qf2#
  • Tries
    • 1.Kb1?
      • 1...e2
        • 2.Qf2#
      • 1...Rxg1!
    • 1.Ka2?
      • 1...e2
        • 2.Qf2#
      • 1...Rxg1!
    • 1.Kb2?
      • 1...e2
        • 2.Qf2#
      • 1...Rxg1!
    • 1.Bf1?
      • threat
        • 2.Sf3#
      • 1...Rxg1
        • 2.Qh4#
      • 1...Kxg1!
    • 1.Qe2+?
      • 1...Kxg1
        • 2.Qg2#
      • 1...Kg3!
  • Keys
    • 1.Qh4!
      • 1...Rxg1+
        • 2.Bf1#
      • 1...Kxg1
        • 2.Qg3#
      • 1...e2
        • 2.Qf2#

Anticipated by 24049(1917), 38405(1937)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::QAR2(B)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • P(c);N_GUARD::QAR2(B)
      • Refutation
        • R(a);P_PINQ(B),XS(C)
    • Try
      • K(A);P-FLIGHT
      • Vars
        • P(c);N_GUARD::QAR2(B)
      • Refutation
        • R(a);XS(C)
    • Try
      • K(A);S_FLIGHT
      • Vars
        • P(c);N_GUARD::QAR2(B)
      • Refutation
        • R(a);XS(C)
    • Try
      • B(D);
      • Threat
        • S(C)
      • Vars
        • R(a);SBLOCK,XS(C)::QAR2(B)
      • Refutation
        • K(b);S_FLIGHT,XS(C)
    • Try
      • Q(B);CHECK,P_SPINS(C)
      • Vars
        • K(b);S_FLIGHT,XS(C)::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(B);P_SPINS(C)
    • Vars
      • R(a);CHECK,SBLOCK,XS(C)::QAR(B)+B(D)
      • K(b);S_FLIGHT,XS(C)::QAR2(B)
      • P(c);N_GUARD::QAR2(B)
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