MESON Chess Problem Database

Problem Display
PID: 149223 (8/8/1qP1N3/pRpQn3/k1P5/r1Pp4/PK2N3/R7 w - - 0 1)

Placanico, Pietro L

Rallo, Vito

Best Problems, 2010

8/8/1qP1N3/pRpQn3/k1P5/r1Pp4/PK2N3/R7

#2

10 + 7

15148 Sadier Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Qc7
      • 2.Sxc5#
    • 1...Qd8
      • 2.Sxc5#
    • 1...Qa6
      • 2.Sxc5#
    • 1...Qb7
      • 2.Sxc5#
    • 1...Qb8
      • 2.Sxc5#
    • 1...Rxa2+
      • 2.Rxa2#
    • 1...Rb3+
      • 2.axb3#
    • 1...Rxc3
      • 2.Sxc3#
    • 1...Sxc4+
      • 2.Qxc4#
  • Tries
    • 1.Rxb6?
      • threat
        • 2.Sxc5#
      • 1...Rxa2+
        • 2.Rxa2#
      • 1...Rb3+
        • 2.axb3#
      • 1...Sxc4+
        • 2.Qxc4#
      • 1...Sd7!
  • Keys
    • 1.Qxc5!
      • threat
        • 2.Qxa3#
      • 1...Qxb5+
        • 2.Qxb5#
      • 1...Rxa2+
        • 2.Rxa2#
      • 1...Rb3+
        • 2.axb3#
      • 1...Sxc4+
        • 2.Qxc4#
      • 1...Qxc5
        • 2.Sxc5#
      • 1...Rxc3
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(g);N_GUARD,N_PINR(G)::S(J),XP(e)
    • Q(g);N_GUARD::S(J),XP(e)
    • R(a);CHECK,OGATE,P_SPINR(a),XP(B)::R(A),XR(a)
    • R(a);CHECK,N_PINR(G),OGATE::R(A)+P(B)DCHECK,XR(a)
    • R(a);XP(E)::S(D),XR(a)
    • S(f);CHECK,OGATE,XP(F)::QAR2(H),XS(f)
  • Tries
    • Try
      • R(G);N_SPINR(G),XQ(g)
      • Threat
        • S(J),XP(e)
      • Vars
        • R(a);CHECK,OGATE,P_SPINR(a),XP(B)::R(A),XR(a)
        • R(a);CHECK,OGATE::R(A)+P(B)DCHECK,XR(a)
        • S(f);CHECK,OGATE,XP(F)::QAR2(H),XS(f)
      • Refutation
        • S(f);
  • Actual
    • Q(H);XP(e)
    • Threat
      • QAR1(H),XR(a)
    • Vars
      • Q(g);CHECK,OGATE,XR(G)::QAB1(H),XQ(g)
      • R(a);CHECK,OGATE,P_SPINR(a),XP(B)::R(A),XR(a)
      • R(a);CHECK,N_PINR(G),OGATE::R(A)+P(B)DCHECK,XR(a)
      • S(f);CHECK,OGATE,XP(F)::QAR2(H),XS(f)
      • Q(g);N_PINR(G),XQ(H)::S(J),XQ(g)
      • R(a);XP(E)::S(D),XR(a)
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