MESON Chess Problem Database

Problem Display
PID: 162641 (1N6/4q3/1B2P3/PkP2Q2/2p1R3/K7/4P3/8 w - - 0 1)

Barnes, Barry Peter

Einat, Paz

Die Schwalbe, 2015

1N6/4q3/1B2P3/PkP2Q2/2p1R3/K7/4P3/8

#2

9 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Qh4
      • 2.c6#
    • 1...Qxc5+
      • 2.Qxc5#
    • 1...Qd6
      • 2.cxd6#
    • 1...Qa7
      • 2.c6#
    • 1...Qb7
      • 2.c6#
    • 1...Qe8
      • 2.c6#
    • 1...c3
      • 2.Rb4#
  • Tries
    • 1.Rxc4?
      • threat
        • 2.Rb4#
      • 1...Kxc4
        • 2.Qd3#
      • 1...Qh4!
    • 1.Rd4?
      • threat
        • 2.Qb1#
      • 1...Qxc5+
        • 2.Qxc5#
      • 1...Qh7!
    • 1.Qd5?
      • threat
        • 2.Qxc4#
        • 2.Qc6#
      • 1...Qxc5+
        • 2.Qxc5#
      • 1...Qd6
        • 2.Qxc4#
        • 2.cxd6#
      • 1...Qb7
        • 2.Qxc4#
        • 2.c6#
      • 1...Qc7
        • 2.Qxc4#
        • 2.c6#
      • 1...Qd7
        • 2.Qxc4#
        • 2.Qxd7#
      • 1...Qe8
        • 2.Qxc4#
        • 2.c6#
      • 1...c3
        • 2.Rb4#
        • 2.Qb3#
        • 2.Qc4#
        • 2.Qc6#
        • 2.Qd3#
      • 1...Qxe6!
  • Keys
    • 1.Re5!
      • threat
        • 2.Qb1#
      • 1...Qxc5+
        • 2.Rxc5#
      • 1...c3
        • 2.Qd3#
      • 1...Qh7
        • 2.c6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • Q(c);N_PINP(E)::QAR(F)+P(E)
    • Q(c);CHECK,OGATE,P_SPINQ(c),XP(E)::QAR1(F),XQ(c)
    • Q(c);::QAR(F)+P(E),XQ(c)
    • Q(c);N_PINP(E),P_PINP(D)::QAR(F)+P(E)
    • P(a);OGATE::R1(C)
  • Tries
    • Try
      • R(C);XP(a)
      • Threat
        • R1(C)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XR(C)::QAB1(F)
      • Refutation
        • Q(c);N_PINP(E)
    • Try
      • R(C);
      • Threat
        • QAR(F)
      • Vars
        • Q(c);CHECK,OGATE,P_SPINQ(c),XP(E)::QAR1(F),XQ(c)
      • Refutation
        • Q(c);N_PINP(E)
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);CHECK,OGATE,P_SPINQ(c),XP(E)::QAR1(F),XQ(c)
      • Refutation
        • Q(c);N_PINP(E),XP(H)
  • Actual
    • R(C);
    • Threat
      • QAR(F)
    • Vars
      • Q(c);CHECK,OGATE,P_SPINQ(c),XP(E)::R1(C),XQ(c)
      • P(a);OGATEB::QAB(F)
      • Q(c);N_PINP(E)::R(C)+P(E)
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