MESON Chess Problem Database

Problem Display
PID: 265909 (B7/2p1p3/8/N5Q1/3k4/2qp4/3R3K/B7 w - - 0 1)

Bottacchi, Antonio

Realismo e romanticismo nell'arte problemistica di Antonio B, 2005

B7/2p1p3/8/N5Q1/3k4/2qp4/3R3K/B7

#2

6 + 5

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qb2
      • 2.Bxb2#
    • 1...c5
      • 2.Qf4#
    • 1...e5
      • 2.Qg1#
  • Tries
    • 1.Ra2?
      • threat
        • 2.Ra4#
      • 1...Qb2+
        • 2.Bxb2#
      • 1...d2
        • 2.Rxd2#
      • 1...e5
        • 2.Qg1#
      • 1...c5
        • 2.Qf4#
      • 1...Qxa1!
    • 1.Re2?
      • threat
        • 2.Re4#
        • 2.Qe3#
        • 2.Qg1#
        • 2.Qd5#
        • 2.Qe5#
      • 1...Qxa1
        • 2.Qe5#
      • 1...Qb2
        • 2.Bxb2#
        • 2.Qe5#
      • 1...d2
        • 2.Rxd2#
        • 2.Qe3#
        • 2.Qd5#
      • 1...e5
        • 2.Qe3#
        • 2.Qg1#
        • 2.Qxe5#
      • 1...c6
        • 2.Qe5#
      • 1...e6
        • 2.Re4#
        • 2.Qe3#
        • 2.Qg1#
        • 2.Qe5#
      • 1...dxe2!
    • 1.Qf5?
      • threat
        • 2.Rxd3#
      • 1...Ke3
        • 2.Qf2#
      • 1...e5
        • 2.Qf2#
      • 1...Qb2!
  • Keys
    • 1.Rb2!
      • threat
        • 2.Rb4#
      • 1...Qxb2+
        • 2.Bxb2#
      • 1...Qd2+
        • 2.Rxd2#
      • 1...Qc2+
        • 2.Rxc2#
      • 1...Qb4
        • 2.Rxb4#
      • 1...Qb3
        • 2.Rxb3#
      • 1...d2
        • 2.Rxd2#
      • 1...e5
        • 2.Qg1#
      • 1...c5
        • 2.Qf4#

This is after

After Sam Loyd.

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • Q(a);OGATEB,P_PINR(B)::B(A),XQ(a)
    • P(d);SBLOCK::QAR2(E)
    • P(e);SBLOCK::QAB(E)
  • Tries
    • Try
      • R(B);N_PINP(b)
      • Threat
        • R(B)
      • Vars
        • Q(a);CHECK,OGATEB::B(A),XQ(a)
        • P(b);OGATEB::R(B),XP(b)
        • P(e);SBLOCK::QAB(E)
        • P(d);SBLOCK::QAR2(E)
      • Refutation
        • Q(a);N_SPINQ(a),XB(A)
    • Try
      • R(B);N_PINP(b)
      • Threat
        • DUALS(5)
      • Vars
        • Q(a);N_SPINQ(a),XB(A)::QAB1(E)
        • P(d);::QAB1(E)
      • Refutation
        • P(b);XR(B)
    • Try
      • Q(E);
      • Threat
        • R1(B),XP(b)
      • Vars
        • K(c);N_GUARD,N_SPINP(b),N_SPINQ(a),S_FLIGHT::QAB1(E)
        • P(e);SBLOCK::QAB(E)
      • Refutation
        • Q(a);P_PINR(B)
  • Actual
    • R(B);N_PINP(b),N_PINQ(a)
    • Threat
      • R(B)
    • Vars
      • Q(a);CHECK,OGATE,P_SPINQ(a),XR(B)::B(A),XQ(a)
      • Q(a);CHECK,OGATEB::B(A)+R(B),XQ(a)
      • Q(a);::B(A)+R(B),DCHECK,XQ(a)
      • Q(a);OGATEB::B(A)+R(B),XQ(a)
      • P(b);OGATEB::R(B),XP(b)
      • P(e);SBLOCK::QAB(E)
      • P(d);SBLOCK::QAR2(E)
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