MESON Chess Problem Database

Problem Display
PID: 66128 (2k3K1/Q4N2/pP6/pb4B1/1b4R1/q1r5/2R5/2r2B2 w - - 0 1)

Haring, Jacobus

Il Problema, 1932

2k3K1/Q4N2/pP6/pb4B1/1b4R1/q1r5/2R5/2r2B2

#2

8 + 8

136 Problem Observer 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Sd6#
    • 1...Rc7
      • 2.Qxc7#
    • 1...Bc5
      • 2.Qc7#
    • 1...Ba4
      • 2.Bxa6#
    • 1...Bc4
      • 2.Qc7#
    • 1...Bc6
      • 2.Qc7#
    • 1...Bd7
      • 2.Bxa6#
      • 2.Qa8#
    • 1...Be8
      • 2.Bxa6#
  • Tries
    • 1.Bg2?
      • threat
        • 2.Qb7#
      • 1...Rc7
        • 2.Qxc7#
      • 1...Bc6
        • 2.Qc7#
      • 1...Rc6!
    • 1.Bxb5?
      • threat
        • 2.Bxa6#
        • 2.Bd7#
        • 2.Qa8#
      • 1...Qa4
        • 2.Bxa6#
        • 2.Qa8#
      • 1...Rd1
        • 2.Bxa6#
        • 2.Qa8#
      • 1...Rc6
        • 2.Bxa6#
      • 1...Rc7
        • 2.Qxc7#
        • 2.Qa8#
        • 2.b7#
      • 1...Bd6
        • 2.Bxa6#
        • 2.Bd7#
      • 1...axb5!
    • 1.Rc4+?
      • 1...Bc5
        • 2.Sd6#
        • 2.Qc7#
      • 1...Bxc4
        • 2.Qc7#
      • 1...Bc6
        • 2.Qc7#
      • 1...Rxc4!
    • 1.Rd4?
      • threat
        • 2.Rd8#
        • 2.Qa8#
      • 1...Rd1
        • 2.Qa8#
      • 1...Be7
        • 2.Qa8#
      • 1...Bc6
        • 2.Rd8#
        • 2.Qc7#
      • 1...Bd7
        • 2.Bxa6#
        • 2.Qa8#
      • 1...Bd6!
  • Keys
    • 1.Bh3!
      • threat
        • 2.Rc4#
      • 1...Rc7
        • 2.Qxc7#
      • 1...Rc4
        • 2.Rgxc4#
      • 1...Rc5
        • 2.Sd6#
      • 1...Rc6
        • 2.Rg3#
      • 1...Bc5
        • 2.Qc7#
      • 1...Bc4
        • 2.Rxc4#
        • 2.Qc7#
      • 1...Bc6
        • 2.Qc7#
      • 1...Bd7
        • 2.Qa8#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(c);S_CUTB(d)::S(G)
    • R(c);N_GUARD::QAR1(F),XR(c)
    • B(d);N_SPINR(c),S_CUTR(c)::QAR1(F)
    • B(f);OGATE::B(A),XP(g)
    • B(f);N_SPINR(c),P_PINS(G),S_CUTR(c)::QAR1(F)
    • B(f);N_SPINR(c),S_CUTR(c)::QAR1(F)
  • Tries
    • Try
      • B(A);
      • Threat
        • QAB1(F)
      • Vars
        • R(c);N_GUARD::QAR1(F),XR(c)
        • B(f);N_SPINR(c),S_CUTR(c)::QAR1(F)
      • Refutation
        • R(c);
    • Try
      • B(A);XB(f)
      • Threat
        • DUALS(3)
      • Vars
        • R(c);::B(A),XP(g)
      • Refutation
        • P(g);XB(A)
    • Try
      • R(C);CHECK,N_PINR(c)
      • Vars
        • B(f);P_PINS(G),XR(C)::QAR1(F)
        • B(f);P_SPINB(f)::QAR1(F)
      • Refutation
        • R(c);P_SPINR(c),XR(C)
    • Try
      • R(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::QAR2(F)
        • B(d);::QAR2(F)
      • Refutation
        • B(d);
  • Actual
    • B(A);
    • Threat
      • B(A)+R(C),DCHECK
    • Vars
      • R(c);N_GUARD::QAR1(F),XR(c)
      • R(c);::B(A)+R(C),DCHECK,XR(c)
      • R(c);S_CUTB(d)::S(G)
      • R(c);S_CUTB(f)::B(A)+R(C)
      • B(d);N_SPINR(c),S_CUTR(c)::QAR1(F)
      • B(f);N_SPINR(c),S_CUTR(c)::QAR1(F)
      • B(f);SBLOCK::QAR2(F)
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