MESON Chess Problem Database

Problem Display
PID: 251723 (br3q2/5p2/BPP3p1/PK1P3p/7Q/1P2P3/rpNpkNP1/1R6 w - - 0 1)

Reddmann, Hauke

Die Schwalbe, 2021

br3q2/5p2/BPP3p1/PK1P3p/7Q/1P2P3/rpNpkNP1/1R6

#2

13 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qb4+
      • 2.Kxb4#
    • 1...Qc5+
      • 2.Kxc5#
    • 1...Qh6
      • 2.Kb4#
      • 2.Kc5#
    • 1...Qg7
      • 2.Kb4#
      • 2.Kc5#
    • 1...Qd8
      • 2.Kb4#
      • 2.Kc5#
    • 1...Qe8
      • 2.Kb4#
      • 2.Kc5#
    • 1...Qg8
      • 2.Kb4#
      • 2.Kc5#
    • 1...Qh8
      • 2.Kb4#
      • 2.Kc5#
    • 1...Ra4
      • 2.Kxa4#
    • 1...Rxa5+
      • 2.Kxa5#
    • 1...Rxb6+
      • 2.Kxb6#
    • 1...Bxc6+
      • 2.Kxc6#
  • Tries
    • 1.Qg4+?
      • 1...Kxf2
        • 2.Qf3#
      • 1...hxg4!
    • 1.Qxh5+?
      • 1...Kxf2
        • 2.Qf3#
      • 1...gxh5!
  • Keys
    • 1.Sd1!
      • threat
        • 2.Qc4#
      • 1...Qb4+
        • 2.Kxb4#
      • 1...Qc5+
        • 2.Kxc5#
      • 1...Rxa5+
        • 2.Kxa5#
      • 1...Rxb6+
        • 2.Kxb6#
      • 1...Bxc6+
        • 2.Kxc6#
      • 1...Kf1
        • 2.Qf2#
      • 1...Kd3
        • 2.Qc4#
      • 1...Ra4
        • 2.Kxa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • Q(j);CHECK::B(K)+K(I),XQ(j)
    • R(a);::B(K)+K(I),XR(a)
    • R(a);CHECK,XP(H)::B(K)+K(I),XR(a)
    • R(i);CHECK,XP(L)::B(K)+K(I),XR(i)
    • B(h);CHECK,XP(M)::B(K)+K(I),XB(h)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(d);P-FLIGHT,XS(C)::QAR1(G)
      • Refutation
        • P(e);XQ(G)
    • Try
      • Q(G);CHECK,XP(e)
      • Vars
        • K(d);P-FLIGHT,XS(C)::QAR1(G)
      • Refutation
        • P(f);XQ(G)
  • Actual
    • S(C);
    • Threat
      • QAB(G)
    • Vars
      • Q(j);CHECK::B(K)+K(I),XQ(j)
      • R(a);CHECK,XP(H)::B(K)+K(I),XR(a)
      • R(i);CHECK,XP(L)::B(K)+K(I),XR(i)
      • B(h);CHECK,XP(M)::B(K)+K(I),XB(h)
      • K(d);N_GUARD,S_FLIGHT::QAR1(G)
      • K(d);S_FLIGHT::QAB1(G)
      • R(a);::B(K)+K(I),XR(a)
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