MESON Chess Problem Database

Problem Display
PID: 212385 (8/8/8/8/8/K1p3R1/8/kr5Q w - - 0 1)

Rice, John Michael

The Problemist, 1986

8/8/8/8/8/K1p3R1/8/kr5Q

#2

3 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Qxc1#
    • 1...Rd1
      • 2.Qxd1#
    • 1...Re1
      • 2.Qxe1#
    • 1...Rf1
      • 2.Qxf1#
    • 1...Rg1
      • 2.Rxg1#
      • 2.Qxg1#
  • Tries
    • 1.Rxc3?
      • 1...Rc1
        • 2.Rxc1#
        • 2.Qxc1#
      • 1...Rd1
        • 2.Qxd1#
      • 1...Re1
        • 2.Qxe1#
      • 1...Rf1
        • 2.Qxf1#
      • 1...Rg1
        • 2.Qxg1#
      • 1...Rxh1!
    • 1.Rh3?
      • 1...Rxh1
        • 2.Rxh1#
      • 1...Rc1
        • 2.Qxc1#
      • 1...Rd1
        • 2.Qxd1#
      • 1...Re1
        • 2.Qxe1#
      • 1...Rf1
        • 2.Qxf1#
      • 1...Rg1
        • 2.Qxg1#
      • 1...c2!
    • 1.Qg1?
      • 1...Rxg1
        • 2.Rxg1#
      • 1...Rc1
        • 2.Qxc1#
      • 1...Rd1
        • 2.Qxd1#
      • 1...Re1
        • 2.Qxe1#
      • 1...Rf1
        • 2.Qxf1#
      • 1...c2!
  • Keys
    • 1.Rg1!
      • threat
        • 2.Rxb1#
      • 1...Rxg1
        • 2.Qxg1#
      • 1...Rc1
        • 2.Rxc1#
      • 1...Rd1
        • 2.Rxd1#
      • 1...Re1
        • 2.Rxe1#
      • 1...Rf1
        • 2.Rxf1#
      • 1...c2
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(b);OGATEB::QAR2(A),XR(b)
    • R(b);OGATEB::QAR(A),XR(b)
  • Tries
    • Try
      • R(C);XP(c)
      • Vars
        • R(b);OGATEB::QAR(A),XR(b)
      • Refutation
        • R(b);N_SPINR(b),XQ(A)
    • Try
      • R(C);
      • Vars
        • R(b);N_SPINR(b),OGATE,XQ(A)::R(C),XR(b)
        • R(b);OGATEB::QAR2(A),XR(b)
        • R(b);OGATEB::QAR(A),XR(b)
      • Refutation
        • P(c);
    • Try
      • Q(A);
      • Vars
        • R(b);N_SPINR(b),OGATE,XQ(A)::R(C),XR(b)
        • R(b);OGATEB::QAR2(A),XR(b)
        • R(b);OGATEB::QAR(A),XR(b)
      • Refutation
        • P(c);
  • Actual
    • R(C);
    • Threat
      • R1(C),XR(b)
    • Vars
      • R(b);OGATE,XR(C)::QAR(A),XR(b)
      • R(b);OGATEB::R(C),XR(b)
      • P(c);OGATEB::QAB(A)
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