MESON Chess Problem Database

Problem Display
PID: 136393 (5K2/8/8/8/8/6Rp/5N1k/4QqR1 w - - 0 1)

Cuppini, Alessandro

Source?, 0000

5K2/8/8/8/8/6Rp/5N1k/4QqR1

#2

5 + 3

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2
      • 2.Rxh3#
    • 1...Qg2
      • 2.Sg4#
    • 1...Qd3
      • 2.Sg4#
    • 1...Qc4
      • 2.Rxh3#
    • 1...Qb5
      • 2.Sg4#
      • 2.Rxh3#
    • 1...Qa6
      • 2.Sg4#
      • 2.Rxh3#
    • 1...Qxe1
      • 2.Sg4#
    • 1...Qxg1
      • 2.Qxg1#
    • 1...Qxf2+
      • 2.Qxf2#
  • Tries
    • 1.Kf7?
      • 1...Qxf2+
        • 2.Qxf2#
      • 1...Qxe1
        • 2.Sg4#
      • 1...Qxg1
        • 2.Qxg1#
      • 1...Qg2
        • 2.Sg4#
      • 1...Qe2
        • 2.Rxh3#
      • 1...Qd3
        • 2.Sg4#
      • 1...Qb5
        • 2.Sg4#
        • 2.Rxh3#
      • 1...Qa6
        • 2.Sg4#
        • 2.Rxh3#
      • 1...Qc4+!
    • 1.Kg8?
      • threat
        • 2.Sg4#
      • 1...Qxg1
        • 2.Qxg1#
      • 1...Qxf2
        • 2.Qxf2#
      • 1...Qe2
        • 2.Rxh3#
      • 1...Qc4+!
    • 1.Rh1+?
      • 1...Qxh1
        • 2.Sg4#
      • 1...Kxg3!
    • 1.R1g2+?
      • 1...Qxg2
        • 2.Sg4#
      • 1...hxg2!
  • Keys
    • 1.Kg7!
      • threat
        • 2.Sg4#
      • 1...Qxg1
        • 2.Qxg1#
      • 1...Qxf2
        • 2.Qxf2#
      • 1...Qe2
        • 2.Rxh3#
      • 1...Qc4
        • 2.Rxh3#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • Q(a);N_GUARD,N_PINS(C)::R1(D),XP(c)
    • Q(a);N_PINS(C)::S(C)
    • Q(a);N_PINS(C),XQ(A)::S(C)
    • Q(a);N_PINS(C),OGATE,XR(B)::QAB1(A),XQ(a)
    • Q(a);CHECK,OGATE,XS(C)::QAR2(A),XQ(a)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Vars
        • Q(a);CHECK,OGATE,XS(C)::QAR2(A),XQ(a)
        • Q(a);N_PINS(C),XQ(A)::S(C)
        • Q(a);N_PINS(C),OGATE,XR(B)::QAB1(A),XQ(a)
        • Q(a);N_PINS(C)::S(C)
        • Q(a);N_GUARD,N_PINS(C)::R1(D),XP(c)
      • Refutation
        • Q(a);CHECK,N_PINS(C)
    • Try
      • K(E);N_SPINS(C),P-FLIGHT
      • Threat
        • S(C)
      • Vars
        • Q(a);OGATE,P_PINR(D),XR(B)::QAB1(A),XQ(a)
        • Q(a);OGATE,XS(C)::QAR2(A),XQ(a)
        • Q(a);N_GUARD::R1(D),XP(c)
      • Refutation
        • Q(a);CHECK
    • Try
      • R(B);CHECK
      • Vars
        • Q(a);N_PINS(C),XR(B)::S(C)
      • Refutation
        • K(b);S_FLIGHT,XR(D)
    • Try
      • R(B);CHECK
      • Vars
        • Q(a);N_PINS(C),XR(B)::S(C)
      • Refutation
        • P(c);XR(B)
  • Actual
    • K(E);N_SPINS(C),S_FLIGHT
    • Threat
      • S(C)
    • Vars
      • Q(a);OGATE,P_PINR(D),XR(B)::QAB1(A),XQ(a)
      • Q(a);OGATE,XS(C)::QAR2(A),XQ(a)
      • Q(a);N_GUARD::R1(D),XP(c)
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